#include "charset.h"
#include "indent.h"
#include "commands.h"
+#include "keymap.h"
#include "macros.h"
#include "disptab.h"
#include "termhooks.h"
extern Lisp_Object Voverriding_local_map_menu_flag;
extern Lisp_Object Qmenu_item;
extern Lisp_Object Qwhen;
+extern Lisp_Object Qhelp_echo;
Lisp_Object Qoverriding_local_map, Qoverriding_terminal_local_map;
Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions;
Lisp_Object Vfontification_functions;
Lisp_Object Qfontification_functions;
+/* Non-zero means automatically select any window when the mouse
+ cursor moves into it. */
+int mouse_autoselect_window;
+
/* Non-zero means draw tool bar buttons raised when the mouse moves
over them. */
int auto_resize_tool_bars_p;
+/* Non-zero means draw block and hollow cursor as wide as the glyph
+ under it. For example, if a block cursor is over a tab, it will be
+ drawn as wide as that tab on the display. */
+
+int x_stretch_cursor_p;
+
/* Non-nil means don't actually do any redisplay. */
Lisp_Object Vinhibit_redisplay, Qinhibit_redisplay;
int inhibit_free_realized_faces;
Lisp_Object Qinhibit_free_realized_faces;
+/* If a string, XTread_socket generates an event to display that string.
+ (The display is done in read_char.) */
+
+Lisp_Object help_echo_string;
+Lisp_Object help_echo_window;
+Lisp_Object help_echo_object;
+int help_echo_pos;
+
+/* Temporary variable for XTread_socket. */
+
+Lisp_Object previous_help_echo_string;
+
+
\f
/* Function prototypes. */
static void build_desired_tool_bar_string P_ ((struct frame *f));
static int redisplay_tool_bar P_ ((struct frame *));
static void display_tool_bar_line P_ ((struct it *));
+static void notice_overwritten_cursor P_ ((struct window *,
+ enum glyph_row_area,
+ int, int, int, int));
+
+
#endif /* HAVE_WINDOW_SYSTEM */
BYTEPOS (*newpos) = CHARPOS (*newpos);
}
+/* EXPORT:
+ Return an estimation of the pixel height of mode or top lines on
+ frame F. FACE_ID specifies what line's height to estimate. */
+
+int
+estimate_mode_line_height (f, face_id)
+ struct frame *f;
+ enum face_id face_id;
+{
+#ifdef HAVE_WINDOW_SYSTEM
+ if (FRAME_WINDOW_P (f))
+ {
+ int height = FONT_HEIGHT (FRAME_FONT (f));
+
+ /* This function is called so early when Emacs starts that the face
+ cache and mode line face are not yet initialized. */
+ if (FRAME_FACE_CACHE (f))
+ {
+ struct face *face = FACE_FROM_ID (f, face_id);
+ if (face)
+ {
+ if (face->font)
+ height = FONT_HEIGHT (face->font);
+ if (face->box_line_width > 0)
+ height += 2 * face->box_line_width;
+ }
+ }
+
+ return height;
+ }
+#endif
+
+ return 1;
+}
+
+#ifdef HAVE_WINDOW_SYSTEM
+
+/* Find the glyph under window-relative coordinates X/Y in window W.
+ Consider only glyphs from buffer text, i.e. no glyphs from overlay
+ strings. Return in *HPOS and *VPOS the row and column number of
+ the glyph found. Return in *AREA the glyph area containing X.
+ Value is a pointer to the glyph found or null if X/Y is not on
+ text, or we can't tell because W's current matrix is not up to
+ date. */
+
+static struct glyph *
+x_y_to_hpos_vpos (w, x, y, hpos, vpos, area, buffer_only_p)
+ struct window *w;
+ int x, y;
+ int *hpos, *vpos, *area;
+ int buffer_only_p;
+{
+ struct glyph *glyph, *end;
+ struct glyph_row *row = NULL;
+ int x0, i, left_area_width;
+
+ /* Find row containing Y. Give up if some row is not enabled. */
+ for (i = 0; i < w->current_matrix->nrows; ++i)
+ {
+ row = MATRIX_ROW (w->current_matrix, i);
+ if (!row->enabled_p)
+ return NULL;
+ if (y >= row->y && y < MATRIX_ROW_BOTTOM_Y (row))
+ break;
+ }
+
+ *vpos = i;
+ *hpos = 0;
+
+ /* Give up if Y is not in the window. */
+ if (i == w->current_matrix->nrows)
+ return NULL;
+
+ /* Get the glyph area containing X. */
+ if (w->pseudo_window_p)
+ {
+ *area = TEXT_AREA;
+ x0 = 0;
+ }
+ else
+ {
+ left_area_width = window_box_width (w, LEFT_MARGIN_AREA);
+ if (x < left_area_width)
+ {
+ *area = LEFT_MARGIN_AREA;
+ x0 = 0;
+ }
+ else if (x < left_area_width + window_box_width (w, TEXT_AREA))
+ {
+ *area = TEXT_AREA;
+ x0 = row->x + left_area_width;
+ }
+ else
+ {
+ *area = RIGHT_MARGIN_AREA;
+ x0 = left_area_width + window_box_width (w, TEXT_AREA);
+ }
+ }
+
+ /* Find glyph containing X. */
+ glyph = row->glyphs[*area];
+ end = glyph + row->used[*area];
+ while (glyph < end)
+ {
+ if (x < x0 + glyph->pixel_width)
+ {
+ if (w->pseudo_window_p)
+ break;
+ else if (!buffer_only_p || BUFFERP (glyph->object))
+ break;
+ }
+
+ x0 += glyph->pixel_width;
+ ++glyph;
+ }
+
+ if (glyph == end)
+ return NULL;
+
+ *hpos = glyph - row->glyphs[*area];
+ return glyph;
+}
+
+
+/* EXPORT:
+ Convert frame-relative x/y to coordinates relative to window W.
+ Takes pseudo-windows into account. */
+
+void
+frame_to_window_pixel_xy (w, x, y)
+ struct window *w;
+ int *x, *y;
+{
+ if (w->pseudo_window_p)
+ {
+ /* A pseudo-window is always full-width, and starts at the
+ left edge of the frame, plus a frame border. */
+ struct frame *f = XFRAME (w->frame);
+ *x -= FRAME_INTERNAL_BORDER_WIDTH_SAFE (f);
+ *y = FRAME_TO_WINDOW_PIXEL_Y (w, *y);
+ }
+ else
+ {
+ *x = FRAME_TO_WINDOW_PIXEL_X (w, *x);
+ *y = FRAME_TO_WINDOW_PIXEL_Y (w, *y);
+ }
+}
+
+/* EXPORT:
+ Return in *R the clipping rectangle for glyph string S. */
+
+void
+get_glyph_string_clip_rect (s, nr)
+ struct glyph_string *s;
+ NativeRectangle *nr;
+{
+ XRectangle r;
+
+ if (s->row->full_width_p)
+ {
+ /* Draw full-width. X coordinates are relative to S->w->left. */
+ int canon_x = CANON_X_UNIT (s->f);
+
+ r.x = WINDOW_LEFT_MARGIN (s->w) * canon_x;
+ r.width = XFASTINT (s->w->width) * canon_x;
+
+ if (FRAME_HAS_VERTICAL_SCROLL_BARS (s->f))
+ {
+ int width = FRAME_SCROLL_BAR_WIDTH (s->f) * canon_x;
+ if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_LEFT (s->f))
+ r.x -= width;
+ }
+
+ r.x += FRAME_INTERNAL_BORDER_WIDTH (s->f);
+
+ /* Unless displaying a mode or menu bar line, which are always
+ fully visible, clip to the visible part of the row. */
+ if (s->w->pseudo_window_p)
+ r.height = s->row->visible_height;
+ else
+ r.height = s->height;
+ }
+ else
+ {
+ /* This is a text line that may be partially visible. */
+ r.x = WINDOW_AREA_TO_FRAME_PIXEL_X (s->w, s->area, 0);
+ r.width = window_box_width (s->w, s->area);
+ r.height = s->row->visible_height;
+ }
+
+ /* If S draws overlapping rows, it's sufficient to use the top and
+ bottom of the window for clipping because this glyph string
+ intentionally draws over other lines. */
+ if (s->for_overlaps_p)
+ {
+ r.y = WINDOW_DISPLAY_HEADER_LINE_HEIGHT (s->w);
+ r.height = window_text_bottom_y (s->w) - r.y;
+ }
+ else
+ {
+ /* Don't use S->y for clipping because it doesn't take partially
+ visible lines into account. For example, it can be negative for
+ partially visible lines at the top of a window. */
+ if (!s->row->full_width_p
+ && MATRIX_ROW_PARTIALLY_VISIBLE_AT_TOP_P (s->w, s->row))
+ r.y = WINDOW_DISPLAY_HEADER_LINE_HEIGHT (s->w);
+ else
+ r.y = max (0, s->row->y);
+
+ /* If drawing a tool-bar window, draw it over the internal border
+ at the top of the window. */
+ if (s->w == XWINDOW (s->f->tool_bar_window))
+ r.y -= s->f->output_data.x->internal_border_width;
+ }
+
+ r.y = WINDOW_TO_FRAME_PIXEL_Y (s->w, r.y);
+
+#ifdef HAVE_NTGUI
+ /* ++KFS: From W32 port, but it looks ok for all platforms to me. */
+ /* If drawing the cursor, don't let glyph draw outside its
+ advertised boundaries. Cleartype does this under some circumstances. */
+ if (s->hl == DRAW_CURSOR)
+ {
+ if (s->x > r.x)
+ {
+ r.width -= s->x - r.x;
+ r.x = s->x;
+ }
+ r.width = min (r.width, s->first_glyph->pixel_width);
+ }
+#endif
+
+#ifdef CONVERT_FROM_XRECT
+ CONVERT_FROM_XRECT (r, *nr);
+#else
+ *nr = r;
+#endif;
+}
+
+#endif /* HAVE_WINDOW_SYSTEM */
\f
/***********************************************************************
/* Nil means don't try to resize. */
if (NILP (Vresize_mini_windows)
- || (FRAME_X_P (f) && f->output_data.x == NULL))
+ || (FRAME_X_P (f) && FRAME_X_OUTPUT (f) == NULL))
return 0;
if (!FRAME_MINIBUF_ONLY_P (f))
\f
+/***********************************************************************
+ Output Cursor
+ ***********************************************************************/
+
+/* EXPORT:
+ Nominal cursor position -- where to draw output.
+ HPOS and VPOS are window relative glyph matrix coordinates.
+ X and Y are window relative pixel coordinates. */
+
+struct cursor_pos output_cursor;
+
+
+/* EXPORT:
+ Set the global variable output_cursor to CURSOR. All cursor
+ positions are relative to updated_window. */
+
+void
+set_output_cursor (cursor)
+ struct cursor_pos *cursor;
+{
+ output_cursor.hpos = cursor->hpos;
+ output_cursor.vpos = cursor->vpos;
+ output_cursor.x = cursor->x;
+ output_cursor.y = cursor->y;
+}
+
+
+/* EXPORT for RIF:
+ Set a nominal cursor position.
+
+ HPOS and VPOS are column/row positions in a window glyph matrix. X
+ and Y are window text area relative pixel positions.
+
+ If this is done during an update, updated_window will contain the
+ window that is being updated and the position is the future output
+ cursor position for that window. If updated_window is null, use
+ selected_window and display the cursor at the given position. */
+
+void
+x_cursor_to (vpos, hpos, y, x)
+ int vpos, hpos, y, x;
+{
+ struct window *w;
+
+ /* If updated_window is not set, work on selected_window. */
+ if (updated_window)
+ w = updated_window;
+ else
+ w = XWINDOW (selected_window);
+
+ /* Set the output cursor. */
+ output_cursor.hpos = hpos;
+ output_cursor.vpos = vpos;
+ output_cursor.x = x;
+ output_cursor.y = y;
+
+ /* If not called as part of an update, really display the cursor.
+ This will also set the cursor position of W. */
+ if (updated_window == NULL)
+ {
+ BLOCK_INPUT;
+ display_and_set_cursor (w, 1, hpos, vpos, x, y);
+ if (rif->flush_display_optional)
+ rif->flush_display_optional (SELECTED_FRAME ());
+ UNBLOCK_INPUT;
+ }
+}
+
+
+\f
/***********************************************************************
Tool-bars
***********************************************************************/
#ifdef HAVE_WINDOW_SYSTEM
+/* Where the mouse was last time we reported a mouse event. */
+
+FRAME_PTR last_mouse_frame;
+
+/* Tool-bar item index of the item on which a mouse button was pressed
+ or -1. */
+
+int last_tool_bar_item;
+
+
/* Update the tool-bar item list for frame F. This has to be done
before we start to fill in any display lines. Called from
prepare_menu_bars. If SAVE_MATCH_DATA is non-zero, we must save
properties start in F->tool_bar_items. Value is zero if
GLYPH doesn't display a tool-bar item. */
-int
+static int
tool_bar_item_info (f, glyph, prop_idx)
struct frame *f;
struct glyph *glyph;
return success_p;
}
+\f
+/* Get information about the tool-bar item at position X/Y on frame F.
+ Return in *GLYPH a pointer to the glyph of the tool-bar item in
+ the current matrix of the tool-bar window of F, or NULL if not
+ on a tool-bar item. Return in *PROP_IDX the index of the tool-bar
+ item in F->tool_bar_items. Value is
+
+ -1 if X/Y is not on a tool-bar item
+ 0 if X/Y is on the same item that was highlighted before.
+ 1 otherwise. */
+
+static int
+get_tool_bar_item (f, x, y, glyph, hpos, vpos, prop_idx)
+ struct frame *f;
+ int x, y;
+ struct glyph **glyph;
+ int *hpos, *vpos, *prop_idx;
+{
+ Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
+ struct window *w = XWINDOW (f->tool_bar_window);
+ int area;
+
+ /* Find the glyph under X/Y. */
+ *glyph = x_y_to_hpos_vpos (w, x, y, hpos, vpos, &area, 0);
+ if (*glyph == NULL)
+ return -1;
+
+ /* Get the start of this tool-bar item's properties in
+ f->tool_bar_items. */
+ if (!tool_bar_item_info (f, *glyph, prop_idx))
+ return -1;
+
+ /* Is mouse on the highlighted item? */
+ if (EQ (f->tool_bar_window, dpyinfo->mouse_face_window)
+ && *vpos >= dpyinfo->mouse_face_beg_row
+ && *vpos <= dpyinfo->mouse_face_end_row
+ && (*vpos > dpyinfo->mouse_face_beg_row
+ || *hpos >= dpyinfo->mouse_face_beg_col)
+ && (*vpos < dpyinfo->mouse_face_end_row
+ || *hpos < dpyinfo->mouse_face_end_col
+ || dpyinfo->mouse_face_past_end))
+ return 0;
+
+ return 1;
+}
+
+
+/* EXPORT:
+ Handle mouse button event on the tool-bar of frame F, at
+ frame-relative coordinates X/Y. DOWN_P is 1 for a button press,
+ 0 for button release. MODIFIERS is event modifiers for button
+ release. */
+
+void
+handle_tool_bar_click (f, x, y, down_p, modifiers)
+ struct frame *f;
+ int x, y, down_p;
+ unsigned int modifiers;
+{
+ Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
+ struct window *w = XWINDOW (f->tool_bar_window);
+ int hpos, vpos, prop_idx;
+ struct glyph *glyph;
+ Lisp_Object enabled_p;
+
+ /* If not on the highlighted tool-bar item, return. */
+ frame_to_window_pixel_xy (w, &x, &y);
+ if (get_tool_bar_item (f, x, y, &glyph, &hpos, &vpos, &prop_idx) != 0)
+ return;
+
+ /* If item is disabled, do nothing. */
+ enabled_p = AREF (f->tool_bar_items, prop_idx + TOOL_BAR_ITEM_ENABLED_P);
+ if (NILP (enabled_p))
+ return;
+
+ if (down_p)
+ {
+ /* Show item in pressed state. */
+ show_mouse_face (dpyinfo, DRAW_IMAGE_SUNKEN);
+ dpyinfo->mouse_face_image_state = DRAW_IMAGE_SUNKEN;
+ last_tool_bar_item = prop_idx;
+ }
+ else
+ {
+ Lisp_Object key, frame;
+ struct input_event event;
+
+ /* Show item in released state. */
+ show_mouse_face (dpyinfo, DRAW_IMAGE_RAISED);
+ dpyinfo->mouse_face_image_state = DRAW_IMAGE_RAISED;
+
+ key = AREF (f->tool_bar_items, prop_idx + TOOL_BAR_ITEM_KEY);
+
+ XSETFRAME (frame, f);
+ event.kind = TOOL_BAR_EVENT;
+ event.frame_or_window = frame;
+ event.arg = frame;
+ kbd_buffer_store_event (&event);
+
+ event.kind = TOOL_BAR_EVENT;
+ event.frame_or_window = frame;
+ event.arg = key;
+ event.modifiers = modifiers;
+ kbd_buffer_store_event (&event);
+ last_tool_bar_item = -1;
+ }
+}
+
+
+/* Possibly highlight a tool-bar item on frame F when mouse moves to
+ tool-bar window-relative coordinates X/Y. Called from
+ note_mouse_highlight. */
+
+static void
+note_tool_bar_highlight (f, x, y)
+ struct frame *f;
+ int x, y;
+{
+ Lisp_Object window = f->tool_bar_window;
+ struct window *w = XWINDOW (window);
+ Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
+ int hpos, vpos;
+ struct glyph *glyph;
+ struct glyph_row *row;
+ int i;
+ Lisp_Object enabled_p;
+ int prop_idx;
+ enum draw_glyphs_face draw = DRAW_IMAGE_RAISED;
+ int mouse_down_p, rc;
+
+ /* Function note_mouse_highlight is called with negative x(y
+ values when mouse moves outside of the frame. */
+ if (x <= 0 || y <= 0)
+ {
+ clear_mouse_face (dpyinfo);
+ return;
+ }
+
+ rc = get_tool_bar_item (f, x, y, &glyph, &hpos, &vpos, &prop_idx);
+ if (rc < 0)
+ {
+ /* Not on tool-bar item. */
+ clear_mouse_face (dpyinfo);
+ return;
+ }
+ else if (rc == 0)
+ /* On same tool-bar item as before. */
+ goto set_help_echo;
+
+ clear_mouse_face (dpyinfo);
+
+ /* Mouse is down, but on different tool-bar item? */
+ mouse_down_p = (dpyinfo->grabbed
+ && f == last_mouse_frame
+ && FRAME_LIVE_P (f));
+ if (mouse_down_p
+ && last_tool_bar_item != prop_idx)
+ return;
+
+ dpyinfo->mouse_face_image_state = DRAW_NORMAL_TEXT;
+ draw = mouse_down_p ? DRAW_IMAGE_SUNKEN : DRAW_IMAGE_RAISED;
+
+ /* If tool-bar item is not enabled, don't highlight it. */
+ enabled_p = AREF (f->tool_bar_items, prop_idx + TOOL_BAR_ITEM_ENABLED_P);
+ if (!NILP (enabled_p))
+ {
+ /* Compute the x-position of the glyph. In front and past the
+ image is a space. We include this is the highlighted area. */
+ row = MATRIX_ROW (w->current_matrix, vpos);
+ for (i = x = 0; i < hpos; ++i)
+ x += row->glyphs[TEXT_AREA][i].pixel_width;
+
+ /* Record this as the current active region. */
+ dpyinfo->mouse_face_beg_col = hpos;
+ dpyinfo->mouse_face_beg_row = vpos;
+ dpyinfo->mouse_face_beg_x = x;
+ dpyinfo->mouse_face_beg_y = row->y;
+ dpyinfo->mouse_face_past_end = 0;
+
+ dpyinfo->mouse_face_end_col = hpos + 1;
+ dpyinfo->mouse_face_end_row = vpos;
+ dpyinfo->mouse_face_end_x = x + glyph->pixel_width;
+ dpyinfo->mouse_face_end_y = row->y;
+ dpyinfo->mouse_face_window = window;
+ dpyinfo->mouse_face_face_id = TOOL_BAR_FACE_ID;
+
+ /* Display it as active. */
+ show_mouse_face (dpyinfo, draw);
+ dpyinfo->mouse_face_image_state = draw;
+ }
+
+ set_help_echo:
+
+ /* Set help_echo_string to a help string to display for this tool-bar item.
+ XTread_socket does the rest. */
+ help_echo_object = help_echo_window = Qnil;
+ help_echo_pos = -1;
+ help_echo_string = AREF (f->tool_bar_items, prop_idx + TOOL_BAR_ITEM_HELP);
+ if (NILP (help_echo_string))
+ help_echo_string = AREF (f->tool_bar_items, prop_idx + TOOL_BAR_ITEM_CAPTION);
+}
+
#endif /* HAVE_WINDOW_SYSTEM */
{
update_begin (f);
rif->update_window_begin_hook (w);
- rif->clear_mouse_face (w);
+ rif->clear_window_mouse_face (w);
rif->scroll_run_hook (w, &run);
rif->update_window_end_hook (w, 0, 0);
update_end (f);
struct frame *f = XFRAME (WINDOW_FRAME (w));
update_begin (f);
rif->update_window_begin_hook (w);
- rif->clear_mouse_face (w);
+ rif->clear_window_mouse_face (w);
rif->scroll_run_hook (w, &run);
rif->update_window_end_hook (w, 0, 0);
update_end (f);
if (FRAME_WINDOW_P (f))
{
rif->update_window_begin_hook (w);
- rif->clear_mouse_face (w);
+ rif->clear_window_mouse_face (w);
rif->scroll_run_hook (w, &run);
rif->update_window_end_hook (w, 0, 0);
}
-/* The following macros are only called from x_draw_glyphs below.
+/* The following macros are only called from draw_glyphs below.
They reference the following parameters of that function directly:
`w', `row', `area', and `overlap_p'
as well as the following local variables:
x-positions of the drawing area.
This is an ugly monster macro construct because we must use alloca
- to allocate glyph strings (because x_draw_glyphs can be called
+ to allocate glyph strings (because draw_glyphs can be called
asynchronously). */
#define BUILD_GLYPH_STRINGS(START, END, HEAD, TAIL, HL, X, LAST_X) \
Value is the x-position reached, relative to AREA of W. */
-int
-x_draw_glyphs (w, x, row, area, start, end, hl, overlaps_p)
+static int
+draw_glyphs (w, x, row, area, start, end, hl, overlaps_p)
struct window *w;
int x;
struct glyph_row *row;
it->max_phys_descent = max (it->max_phys_descent, it->phys_descent);
}
+/* EXPORT for RIF:
+ Output LEN glyphs starting at START at the nominal cursor position.
+ Advance the nominal cursor over the text. The global variable
+ updated_window contains the window being updated, updated_row is
+ the glyph row being updated, and updated_area is the area of that
+ row being updated. */
-#endif /* HAVE_WINDOW_SYSTEM */
+void
+x_write_glyphs (start, len)
+ struct glyph *start;
+ int len;
+{
+ int x, hpos;
+ xassert (updated_window && updated_row);
+ BLOCK_INPUT;
-\f
-/***********************************************************************
- Cursor types
- ***********************************************************************/
+ /* Write glyphs. */
-/* Value is the internal representation of the specified cursor type
- ARG. If type is BAR_CURSOR, return in *WIDTH the specified width
- of the bar cursor. */
+ hpos = start - updated_row->glyphs[updated_area];
+ x = draw_glyphs (updated_window, output_cursor.x,
+ updated_row, updated_area,
+ hpos, hpos + len,
+ DRAW_NORMAL_TEXT, 0);
-enum text_cursor_kinds
-get_specified_cursor_type (arg, width)
- Lisp_Object arg;
- int *width;
-{
- enum text_cursor_kinds type;
+#ifndef HAVE_CARBON
+ /* ++KFS: Why not on MAC ? */
- if (NILP (arg))
- return NO_CURSOR;
+ /* Invalidate old phys cursor if the glyph at its hpos is redrawn. */
+ if (updated_area == TEXT_AREA
+ && updated_window->phys_cursor_on_p
+ && updated_window->phys_cursor.vpos == output_cursor.vpos
+ && updated_window->phys_cursor.hpos >= hpos
+ && updated_window->phys_cursor.hpos < hpos + len)
+ updated_window->phys_cursor_on_p = 0;
+#endif
- if (EQ (arg, Qbox))
- return FILLED_BOX_CURSOR;
+ UNBLOCK_INPUT;
- if (EQ (arg, Qhollow))
- return HOLLOW_BOX_CURSOR;
+ /* Advance the output cursor. */
+ output_cursor.hpos += len;
+ output_cursor.x = x;
+}
- if (EQ (arg, Qbar))
- {
- *width = 2;
- return BAR_CURSOR;
- }
- if (CONSP (arg)
- && EQ (XCAR (arg), Qbar)
- && INTEGERP (XCDR (arg))
- && XINT (XCDR (arg)) >= 0)
- {
- *width = XINT (XCDR (arg));
- return BAR_CURSOR;
+/* EXPORT for RIF:
+ Insert LEN glyphs from START at the nominal cursor position. */
+
+void
+x_insert_glyphs (start, len)
+ struct glyph *start;
+ int len;
+{
+ struct frame *f;
+ struct window *w;
+ int line_height, shift_by_width, shifted_region_width;
+ struct glyph_row *row;
+ struct glyph *glyph;
+ int frame_x, frame_y, hpos;
+
+ xassert (updated_window && updated_row);
+ BLOCK_INPUT;
+ w = updated_window;
+ f = XFRAME (WINDOW_FRAME (w));
+
+ /* Get the height of the line we are in. */
+ row = updated_row;
+ line_height = row->height;
+
+ /* Get the width of the glyphs to insert. */
+ shift_by_width = 0;
+ for (glyph = start; glyph < start + len; ++glyph)
+ shift_by_width += glyph->pixel_width;
+
+ /* Get the width of the region to shift right. */
+ shifted_region_width = (window_box_width (w, updated_area)
+ - output_cursor.x
+ - shift_by_width);
+
+ /* Shift right. */
+ frame_x = window_box_left (w, updated_area) + output_cursor.x;
+ frame_y = WINDOW_TO_FRAME_PIXEL_Y (w, output_cursor.y);
+
+ rif->shift_glyphs_for_insert (f, frame_x, frame_y, line_height,
+ shifted_region_width, shift_by_width);
+
+ /* Write the glyphs. */
+ hpos = start - row->glyphs[updated_area];
+ draw_glyphs (w, output_cursor.x, row, updated_area,
+ hpos, hpos + len,
+ DRAW_NORMAL_TEXT, 0);
+
+ /* Advance the output cursor. */
+ output_cursor.hpos += len;
+ output_cursor.x += shift_by_width;
+ UNBLOCK_INPUT;
+}
+
+
+/* EXPORT for RIF:
+ Erase the current text line from the nominal cursor position
+ (inclusive) to pixel column TO_X (exclusive). The idea is that
+ everything from TO_X onward is already erased.
+
+ TO_X is a pixel position relative to updated_area of
+ updated_window. TO_X == -1 means clear to the end of this area. */
+
+void
+x_clear_end_of_line (to_x)
+ int to_x;
+{
+ struct frame *f;
+ struct window *w = updated_window;
+ int max_x, min_y, max_y;
+ int from_x, from_y, to_y;
+
+ xassert (updated_window && updated_row);
+ f = XFRAME (w->frame);
+
+ if (updated_row->full_width_p)
+ {
+ max_x = XFASTINT (w->width) * CANON_X_UNIT (f);
+ if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)
+ && !w->pseudo_window_p)
+ max_x += FRAME_SCROLL_BAR_WIDTH (f) * CANON_X_UNIT (f);
+ }
+ else
+ max_x = window_box_width (w, updated_area);
+ max_y = window_text_bottom_y (w);
+
+ /* TO_X == 0 means don't do anything. TO_X < 0 means clear to end
+ of window. For TO_X > 0, truncate to end of drawing area. */
+ if (to_x == 0)
+ return;
+ else if (to_x < 0)
+ to_x = max_x;
+ else
+ to_x = min (to_x, max_x);
+
+ to_y = min (max_y, output_cursor.y + updated_row->height);
+
+ /* Notice if the cursor will be cleared by this operation. */
+ if (!updated_row->full_width_p)
+ notice_overwritten_cursor (w, updated_area,
+ output_cursor.x, -1,
+ updated_row->y,
+ MATRIX_ROW_BOTTOM_Y (updated_row));
+
+ from_x = output_cursor.x;
+
+ /* Translate to frame coordinates. */
+ if (updated_row->full_width_p)
+ {
+ from_x = WINDOW_TO_FRAME_PIXEL_X (w, from_x);
+ to_x = WINDOW_TO_FRAME_PIXEL_X (w, to_x);
+ }
+ else
+ {
+ from_x = WINDOW_AREA_TO_FRAME_PIXEL_X (w, updated_area, from_x);
+ to_x = WINDOW_AREA_TO_FRAME_PIXEL_X (w, updated_area, to_x);
+ }
+
+ min_y = WINDOW_DISPLAY_HEADER_LINE_HEIGHT (w);
+ from_y = WINDOW_TO_FRAME_PIXEL_Y (w, max (min_y, output_cursor.y));
+ to_y = WINDOW_TO_FRAME_PIXEL_Y (w, to_y);
+
+ /* Prevent inadvertently clearing to end of the X window. */
+ if (to_x > from_x && to_y > from_y)
+ {
+ BLOCK_INPUT;
+ rif->clear_frame_area (f, from_x, from_y,
+ to_x - from_x, to_y - from_y);
+ UNBLOCK_INPUT;
+ }
+}
+
+#endif /* HAVE_WINDOW_SYSTEM */
+
+
+\f
+/***********************************************************************
+ Cursor types
+ ***********************************************************************/
+
+/* Value is the internal representation of the specified cursor type
+ ARG. If type is BAR_CURSOR, return in *WIDTH the specified width
+ of the bar cursor. */
+
+enum text_cursor_kinds
+get_specified_cursor_type (arg, width)
+ Lisp_Object arg;
+ int *width;
+{
+ enum text_cursor_kinds type;
+
+ if (NILP (arg))
+ return NO_CURSOR;
+
+ if (EQ (arg, Qbox))
+ return FILLED_BOX_CURSOR;
+
+ if (EQ (arg, Qhollow))
+ return HOLLOW_BOX_CURSOR;
+
+ if (EQ (arg, Qbar))
+ {
+ *width = 2;
+ return BAR_CURSOR;
+ }
+
+ if (CONSP (arg)
+ && EQ (XCAR (arg), Qbar)
+ && INTEGERP (XCDR (arg))
+ && XINT (XCDR (arg)) >= 0)
+ {
+ *width = XINT (XCDR (arg));
+ return BAR_CURSOR;
+ }
+
+ if (EQ (arg, Qhbar))
+ {
+ *width = 2;
+ return HBAR_CURSOR;
+ }
+
+ if (CONSP (arg)
+ && EQ (XCAR (arg), Qhbar)
+ && INTEGERP (XCDR (arg))
+ && XINT (XCDR (arg)) >= 0)
+ {
+ *width = XINT (XCDR (arg));
+ return HBAR_CURSOR;
+ }
+
+ /* Treat anything unknown as "hollow box cursor".
+ It was bad to signal an error; people have trouble fixing
+ .Xdefaults with Emacs, when it has something bad in it. */
+ type = HOLLOW_BOX_CURSOR;
+
+ return type;
+}
+
+/* Set the default cursor types for specified frame. */
+void
+set_frame_cursor_types (f, arg)
+ struct frame *f;
+ Lisp_Object arg;
+{
+ int width;
+ Lisp_Object tem;
+
+ FRAME_DESIRED_CURSOR (f) = get_specified_cursor_type (arg, &width);
+ FRAME_CURSOR_WIDTH (f) = width;
+
+ /* By default, set up the blink-off state depending on the on-state. */
+
+ tem = Fassoc (arg, Vblink_cursor_alist);
+ if (!NILP (tem))
+ {
+ FRAME_BLINK_OFF_CURSOR (f)
+ = get_specified_cursor_type (XCDR (tem), &width);
+ FRAME_BLINK_OFF_CURSOR_WIDTH (f) = width;
+ }
+ else
+ FRAME_BLINK_OFF_CURSOR (f) = DEFAULT_CURSOR;
+}
+
+
+/* Return the cursor we want to be displayed in window W. Return
+ width of bar/hbar cursor through WIDTH arg. Return with
+ ACTIVE_CURSOR arg set to 1 if cursor in window W is `active'
+ (i.e. if the `system caret' should track this cursor).
+
+ In a mini-buffer window, we want the cursor only to appear if we
+ are reading input from this window. For the selected window, we
+ want the cursor type given by the frame parameter or buffer local
+ setting of cursor-type. If explicitly marked off, draw no cursor.
+ In all other cases, we want a hollow box cursor. */
+
+enum text_cursor_kinds
+get_window_cursor_type (w, width, active_cursor)
+ struct window *w;
+ int *width;
+ int *active_cursor;
+{
+ struct frame *f = XFRAME (w->frame);
+ struct buffer *b = XBUFFER (w->buffer);
+ int cursor_type = DEFAULT_CURSOR;
+ Lisp_Object alt_cursor;
+ int non_selected = 0;
+
+ *active_cursor = 1;
+
+ /* Echo area */
+ if (cursor_in_echo_area
+ && FRAME_HAS_MINIBUF_P (f)
+ && EQ (FRAME_MINIBUF_WINDOW (f), echo_area_window))
+ {
+ if (w == XWINDOW (echo_area_window))
+ {
+ *width = FRAME_CURSOR_WIDTH (f);
+ return FRAME_DESIRED_CURSOR (f);
+ }
+
+ *active_cursor = 0;
+ non_selected = 1;
+ }
+
+ /* Nonselected window or nonselected frame. */
+ else if (w != XWINDOW (f->selected_window)
+#ifdef HAVE_WINDOW_SYSTEM
+ || f != FRAME_X_DISPLAY_INFO (f)->x_highlight_frame
+#endif
+ )
+ {
+ *active_cursor = 0;
+
+ if (MINI_WINDOW_P (w) && minibuf_level == 0)
+ return NO_CURSOR;
+
+ non_selected = 1;
+ }
+
+ /* Never display a cursor in a window in which cursor-type is nil. */
+ if (NILP (b->cursor_type))
+ return NO_CURSOR;
+
+ /* Use cursor-in-non-selected-windows for non-selected window or frame. */
+ if (non_selected)
+ {
+ alt_cursor = Fbuffer_local_value (Qcursor_in_non_selected_windows, w->buffer);
+ return get_specified_cursor_type (alt_cursor, width);
+ }
+
+ /* Get the normal cursor type for this window. */
+ if (EQ (b->cursor_type, Qt))
+ {
+ cursor_type = FRAME_DESIRED_CURSOR (f);
+ *width = FRAME_CURSOR_WIDTH (f);
+ }
+ else
+ cursor_type = get_specified_cursor_type (b->cursor_type, width);
+
+ /* Use normal cursor if not blinked off. */
+ if (!w->cursor_off_p)
+ return cursor_type;
+
+ /* Cursor is blinked off, so determine how to "toggle" it. */
+
+ /* First look for an entry matching the buffer's cursor-type in blink-cursor-alist. */
+ if ((alt_cursor = Fassoc (b->cursor_type, Vblink_cursor_alist), !NILP (alt_cursor)))
+ return get_specified_cursor_type (XCDR (alt_cursor), width);
+
+ /* Then see if frame has specified a specific blink off cursor type. */
+ if (FRAME_BLINK_OFF_CURSOR (f) != DEFAULT_CURSOR)
+ {
+ *width = FRAME_BLINK_OFF_CURSOR_WIDTH (f);
+ return FRAME_BLINK_OFF_CURSOR (f);
+ }
+
+ /* Finally perform built-in cursor blinking:
+ filled box <-> hollow box
+ wide [h]bar <-> narrow [h]bar
+ narrow [h]bar <-> no cursor
+ other type <-> no cursor */
+
+ if (cursor_type == FILLED_BOX_CURSOR)
+ return HOLLOW_BOX_CURSOR;
+
+ if ((cursor_type == BAR_CURSOR || cursor_type == HBAR_CURSOR) && *width > 1)
+ {
+ *width = 1;
+ return cursor_type;
+ }
+
+ return NO_CURSOR;
+}
+
+
+#ifdef HAVE_WINDOW_SYSTEM
+
+/* Notice when the text cursor of window W has been completely
+ overwritten by a drawing operation that outputs glyphs in AREA
+ starting at X0 and ending at X1 in the line starting at Y0 and
+ ending at Y1. X coordinates are area-relative. X1 < 0 means all
+ the rest of the line after X0 has been written. Y coordinates
+ are window-relative. */
+
+static void
+notice_overwritten_cursor (w, area, x0, x1, y0, y1)
+ struct window *w;
+ enum glyph_row_area area;
+ int x0, y0, x1, y1;
+{
+#ifdef HAVE_CARBON
+ /* ++KFS: Why is there a special version of this for the mac ? */
+ if (area == TEXT_AREA
+ && w->phys_cursor_on_p
+ && y0 <= w->phys_cursor.y
+ && y1 >= w->phys_cursor.y + w->phys_cursor_height
+ && x0 <= w->phys_cursor.x
+ && (x1 < 0 || x1 > w->phys_cursor.x))
+ w->phys_cursor_on_p = 0;
+#else
+ if (area == TEXT_AREA && w->phys_cursor_on_p)
+ {
+ int cx0 = w->phys_cursor.x;
+ int cx1 = cx0 + w->phys_cursor_width;
+ int cy0 = w->phys_cursor.y;
+ int cy1 = cy0 + w->phys_cursor_height;
+
+ if (x0 <= cx0 && (x1 < 0 || x1 >= cx1))
+ {
+ /* The cursor image will be completely removed from the
+ screen if the output area intersects the cursor area in
+ y-direction. When we draw in [y0 y1[, and some part of
+ the cursor is at y < y0, that part must have been drawn
+ before. When scrolling, the cursor is erased before
+ actually scrolling, so we don't come here. When not
+ scrolling, the rows above the old cursor row must have
+ changed, and in this case these rows must have written
+ over the cursor image.
+
+ Likewise if part of the cursor is below y1, with the
+ exception of the cursor being in the first blank row at
+ the buffer and window end because update_text_area
+ doesn't draw that row. (Except when it does, but
+ that's handled in update_text_area.) */
+
+ if (((y0 >= cy0 && y0 < cy1) || (y1 > cy0 && y1 < cy1))
+ && w->current_matrix->rows[w->phys_cursor.vpos].displays_text_p)
+ w->phys_cursor_on_p = 0;
+ }
+ }
+#endif
+}
+
+#endif /* HAVE_WINDOW_SYSTEM */
+
+\f
+/************************************************************************
+ Mouse Face
+ ************************************************************************/
+
+#ifdef HAVE_WINDOW_SYSTEM
+
+/* EXPORT for RIF:
+ Fix the display of area AREA of overlapping row ROW in window W. */
+
+void
+x_fix_overlapping_area (w, row, area)
+ struct window *w;
+ struct glyph_row *row;
+ enum glyph_row_area area;
+{
+ int i, x;
+
+ BLOCK_INPUT;
+
+ if (area == LEFT_MARGIN_AREA)
+ x = 0;
+ else if (area == TEXT_AREA)
+ x = row->x + window_box_width (w, LEFT_MARGIN_AREA);
+ else
+ x = (window_box_width (w, LEFT_MARGIN_AREA)
+ + window_box_width (w, TEXT_AREA));
+
+ for (i = 0; i < row->used[area];)
+ {
+ if (row->glyphs[area][i].overlaps_vertically_p)
+ {
+ int start = i, start_x = x;
+
+ do
+ {
+ x += row->glyphs[area][i].pixel_width;
+ ++i;
+ }
+ while (i < row->used[area]
+ && row->glyphs[area][i].overlaps_vertically_p);
+
+ draw_glyphs (w, start_x, row, area,
+ start, i,
+ DRAW_NORMAL_TEXT, 1);
+ }
+ else
+ {
+ x += row->glyphs[area][i].pixel_width;
+ ++i;
+ }
+ }
+
+ UNBLOCK_INPUT;
+}
+
+
+/* EXPORT:
+ Draw the cursor glyph of window W in glyph row ROW. See the
+ comment of draw_glyphs for the meaning of HL. */
+
+void
+draw_phys_cursor_glyph (w, row, hl)
+ struct window *w;
+ struct glyph_row *row;
+ enum draw_glyphs_face hl;
+{
+ /* If cursor hpos is out of bounds, don't draw garbage. This can
+ happen in mini-buffer windows when switching between echo area
+ glyphs and mini-buffer. */
+ if (w->phys_cursor.hpos < row->used[TEXT_AREA])
+ {
+ int on_p = w->phys_cursor_on_p;
+ int x1;
+ x1 = draw_glyphs (w, w->phys_cursor.x, row, TEXT_AREA,
+ w->phys_cursor.hpos, w->phys_cursor.hpos + 1,
+ hl, 0);
+ w->phys_cursor_on_p = on_p;
+
+#ifndef HAVE_CARBON
+ /* ++KFS: MAC version did not adjust phys_cursor_width (bug?) */
+ if (hl == DRAW_CURSOR)
+ w->phys_cursor_width = x1 - w->phys_cursor.x;
+ else
+#endif
+ /* When we erase the cursor, and ROW is overlapped by other
+ rows, make sure that these overlapping parts of other rows
+ are redrawn. */
+ if (hl == DRAW_NORMAL_TEXT && row->overlapped_p)
+ {
+ if (row > w->current_matrix->rows
+ && MATRIX_ROW_OVERLAPS_SUCC_P (row - 1))
+ x_fix_overlapping_area (w, row - 1, TEXT_AREA);
+
+ if (MATRIX_ROW_BOTTOM_Y (row) < window_text_bottom_y (w)
+ && MATRIX_ROW_OVERLAPS_PRED_P (row + 1))
+ x_fix_overlapping_area (w, row + 1, TEXT_AREA);
+ }
+ }
+}
+
+
+/* EXPORT:
+ Erase the image of a cursor of window W from the screen. */
+
+void
+erase_phys_cursor (w)
+ struct window *w;
+{
+ struct frame *f = XFRAME (w->frame);
+ Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
+ int hpos = w->phys_cursor.hpos;
+ int vpos = w->phys_cursor.vpos;
+ int mouse_face_here_p = 0;
+ struct glyph_matrix *active_glyphs = w->current_matrix;
+ struct glyph_row *cursor_row;
+ struct glyph *cursor_glyph;
+ enum draw_glyphs_face hl;
+
+ /* No cursor displayed or row invalidated => nothing to do on the
+ screen. */
+ if (w->phys_cursor_type == NO_CURSOR)
+ goto mark_cursor_off;
+
+ /* VPOS >= active_glyphs->nrows means that window has been resized.
+ Don't bother to erase the cursor. */
+ if (vpos >= active_glyphs->nrows)
+ goto mark_cursor_off;
+
+ /* If row containing cursor is marked invalid, there is nothing we
+ can do. */
+ cursor_row = MATRIX_ROW (active_glyphs, vpos);
+ if (!cursor_row->enabled_p)
+ goto mark_cursor_off;
+
+ /* If row is completely invisible, don't attempt to delete a cursor which
+ isn't there. This can happen if cursor is at top of a window, and
+ we switch to a buffer with a header line in that window. */
+ if (cursor_row->visible_height <= 0)
+ goto mark_cursor_off;
+
+ /* This can happen when the new row is shorter than the old one.
+ In this case, either draw_glyphs or clear_end_of_line
+ should have cleared the cursor. Note that we wouldn't be
+ able to erase the cursor in this case because we don't have a
+ cursor glyph at hand. */
+ if (w->phys_cursor.hpos >= cursor_row->used[TEXT_AREA])
+ goto mark_cursor_off;
+
+ /* If the cursor is in the mouse face area, redisplay that when
+ we clear the cursor. */
+ if (! NILP (dpyinfo->mouse_face_window)
+ && w == XWINDOW (dpyinfo->mouse_face_window)
+ && (vpos > dpyinfo->mouse_face_beg_row
+ || (vpos == dpyinfo->mouse_face_beg_row
+ && hpos >= dpyinfo->mouse_face_beg_col))
+ && (vpos < dpyinfo->mouse_face_end_row
+ || (vpos == dpyinfo->mouse_face_end_row
+ && hpos < dpyinfo->mouse_face_end_col))
+ /* Don't redraw the cursor's spot in mouse face if it is at the
+ end of a line (on a newline). The cursor appears there, but
+ mouse highlighting does not. */
+ && cursor_row->used[TEXT_AREA] > hpos)
+ mouse_face_here_p = 1;
+
+ /* Maybe clear the display under the cursor. */
+ if (w->phys_cursor_type == HOLLOW_BOX_CURSOR)
+ {
+ int x, y;
+ int header_line_height = WINDOW_DISPLAY_HEADER_LINE_HEIGHT (w);
+
+ cursor_glyph = get_phys_cursor_glyph (w);
+ if (cursor_glyph == NULL)
+ goto mark_cursor_off;
+
+ x = WINDOW_TEXT_TO_FRAME_PIXEL_X (w, w->phys_cursor.x);
+ y = WINDOW_TO_FRAME_PIXEL_Y (w, max (header_line_height, cursor_row->y));
+
+ rif->clear_frame_area (f, x, y,
+ cursor_glyph->pixel_width, cursor_row->visible_height);
+ }
+
+ /* Erase the cursor by redrawing the character underneath it. */
+ if (mouse_face_here_p)
+ hl = DRAW_MOUSE_FACE;
+ else
+ hl = DRAW_NORMAL_TEXT;
+ draw_phys_cursor_glyph (w, cursor_row, hl);
+
+ mark_cursor_off:
+ w->phys_cursor_on_p = 0;
+ w->phys_cursor_type = NO_CURSOR;
+}
+
+
+/* EXPORT:
+ Display or clear cursor of window W. If ON is zero, clear the
+ cursor. If it is non-zero, display the cursor. If ON is nonzero,
+ where to put the cursor is specified by HPOS, VPOS, X and Y. */
+
+void
+display_and_set_cursor (w, on, hpos, vpos, x, y)
+ struct window *w;
+ int on, hpos, vpos, x, y;
+{
+ struct frame *f = XFRAME (w->frame);
+ int new_cursor_type;
+ int new_cursor_width;
+ int active_cursor;
+ struct glyph_matrix *current_glyphs;
+ struct glyph_row *glyph_row;
+ struct glyph *glyph;
+
+ /* This is pointless on invisible frames, and dangerous on garbaged
+ windows and frames; in the latter case, the frame or window may
+ be in the midst of changing its size, and x and y may be off the
+ window. */
+ if (! FRAME_VISIBLE_P (f)
+ || FRAME_GARBAGED_P (f)
+ || vpos >= w->current_matrix->nrows
+ || hpos >= w->current_matrix->matrix_w)
+ return;
+
+ /* If cursor is off and we want it off, return quickly. */
+ if (!on && !w->phys_cursor_on_p)
+ return;
+
+ current_glyphs = w->current_matrix;
+ glyph_row = MATRIX_ROW (current_glyphs, vpos);
+ glyph = glyph_row->glyphs[TEXT_AREA] + hpos;
+
+ /* If cursor row is not enabled, we don't really know where to
+ display the cursor. */
+ if (!glyph_row->enabled_p)
+ {
+ w->phys_cursor_on_p = 0;
+ return;
+ }
+
+ xassert (interrupt_input_blocked);
+
+ /* Set new_cursor_type to the cursor we want to be displayed. */
+ new_cursor_type = get_window_cursor_type (w, &new_cursor_width, &active_cursor);
+
+ /* If cursor is currently being shown and we don't want it to be or
+ it is in the wrong place, or the cursor type is not what we want,
+ erase it. */
+ if (w->phys_cursor_on_p
+ && (!on
+ || w->phys_cursor.x != x
+ || w->phys_cursor.y != y
+ || new_cursor_type != w->phys_cursor_type
+ || ((new_cursor_type == BAR_CURSOR || new_cursor_type == HBAR_CURSOR)
+ && new_cursor_width != w->phys_cursor_width)))
+ erase_phys_cursor (w);
+
+ /* Don't check phys_cursor_on_p here because that flag is only set
+ to zero in some cases where we know that the cursor has been
+ completely erased, to avoid the extra work of erasing the cursor
+ twice. In other words, phys_cursor_on_p can be 1 and the cursor
+ still not be visible, or it has only been partly erased. */
+ if (on)
+ {
+ w->phys_cursor_ascent = glyph_row->ascent;
+ w->phys_cursor_height = glyph_row->height;
+
+ /* Set phys_cursor_.* before x_draw_.* is called because some
+ of them may need the information. */
+ w->phys_cursor.x = x;
+ w->phys_cursor.y = glyph_row->y;
+ w->phys_cursor.hpos = hpos;
+ w->phys_cursor.vpos = vpos;
+ }
+
+ rif->draw_window_cursor (w, glyph_row, on, x, y,
+ new_cursor_type, new_cursor_width);
+}
+
+
+/* Switch the display of W's cursor on or off, according to the value
+ of ON. */
+
+static void
+update_window_cursor (w, on)
+ struct window *w;
+ int on;
+{
+ /* Don't update cursor in windows whose frame is in the process
+ of being deleted. */
+ if (w->current_matrix)
+ {
+ BLOCK_INPUT;
+ display_and_set_cursor (w, on, w->phys_cursor.hpos, w->phys_cursor.vpos,
+ w->phys_cursor.x, w->phys_cursor.y);
+ UNBLOCK_INPUT;
+ }
+}
+
+
+/* Call update_window_cursor with parameter ON_P on all leaf windows
+ in the window tree rooted at W. */
+
+static void
+update_cursor_in_window_tree (w, on_p)
+ struct window *w;
+ int on_p;
+{
+ while (w)
+ {
+ if (!NILP (w->hchild))
+ update_cursor_in_window_tree (XWINDOW (w->hchild), on_p);
+ else if (!NILP (w->vchild))
+ update_cursor_in_window_tree (XWINDOW (w->vchild), on_p);
+ else
+ update_window_cursor (w, on_p);
+
+ w = NILP (w->next) ? 0 : XWINDOW (w->next);
+ }
+}
+
+
+/* EXPORT:
+ Display the cursor on window W, or clear it, according to ON_P.
+ Don't change the cursor's position. */
+
+void
+x_update_cursor (f, on_p)
+ struct frame *f;
+ int on_p;
+{
+ update_cursor_in_window_tree (XWINDOW (f->root_window), on_p);
+}
+
+
+/* EXPORT:
+ Clear the cursor of window W to background color, and mark the
+ cursor as not shown. This is used when the text where the cursor
+ is is about to be rewritten. */
+
+void
+x_clear_cursor (w)
+ struct window *w;
+{
+ if (FRAME_VISIBLE_P (XFRAME (w->frame)) && w->phys_cursor_on_p)
+ update_window_cursor (w, 0);
+}
+
+
+/* EXPORT:
+ Display the active region described by mouse_face_* according to DRAW. */
+
+void
+show_mouse_face (dpyinfo, draw)
+ Display_Info *dpyinfo;
+ enum draw_glyphs_face draw;
+{
+ struct window *w = XWINDOW (dpyinfo->mouse_face_window);
+ struct frame *f = XFRAME (WINDOW_FRAME (w));
+
+ if (/* If window is in the process of being destroyed, don't bother
+ to do anything. */
+ w->current_matrix != NULL
+ /* Don't update mouse highlight if hidden */
+ && (draw != DRAW_MOUSE_FACE || !dpyinfo->mouse_face_hidden)
+ /* Recognize when we are called to operate on rows that don't exist
+ anymore. This can happen when a window is split. */
+ && dpyinfo->mouse_face_end_row < w->current_matrix->nrows)
+ {
+ int phys_cursor_on_p = w->phys_cursor_on_p;
+ struct glyph_row *row, *first, *last;
+
+ first = MATRIX_ROW (w->current_matrix, dpyinfo->mouse_face_beg_row);
+ last = MATRIX_ROW (w->current_matrix, dpyinfo->mouse_face_end_row);
+
+ for (row = first; row <= last && row->enabled_p; ++row)
+ {
+ int start_hpos, end_hpos, start_x;
+
+ /* For all but the first row, the highlight starts at column 0. */
+ if (row == first)
+ {
+ start_hpos = dpyinfo->mouse_face_beg_col;
+ start_x = dpyinfo->mouse_face_beg_x;
+ }
+ else
+ {
+ start_hpos = 0;
+ start_x = 0;
+ }
+
+ if (row == last)
+ end_hpos = dpyinfo->mouse_face_end_col;
+ else
+ end_hpos = row->used[TEXT_AREA];
+
+ if (end_hpos > start_hpos)
+ {
+ draw_glyphs (w, start_x, row, TEXT_AREA,
+ start_hpos, end_hpos,
+ draw, 0);
+
+ row->mouse_face_p
+ = draw == DRAW_MOUSE_FACE || draw == DRAW_IMAGE_RAISED;
+ }
+ }
+
+ /* When we've written over the cursor, arrange for it to
+ be displayed again. */
+ if (phys_cursor_on_p && !w->phys_cursor_on_p)
+ {
+ BLOCK_INPUT;
+ display_and_set_cursor (w, 1,
+ w->phys_cursor.hpos, w->phys_cursor.vpos,
+ w->phys_cursor.x, w->phys_cursor.y);
+ UNBLOCK_INPUT;
+ }
+ }
+
+ /* Change the mouse cursor. */
+ if (draw == DRAW_NORMAL_TEXT)
+ rif->define_frame_cursor (f, FRAME_X_OUTPUT (f)->text_cursor);
+ else if (draw == DRAW_MOUSE_FACE)
+ rif->define_frame_cursor (f, FRAME_X_OUTPUT (f)->hand_cursor);
+ else
+ rif->define_frame_cursor (f, FRAME_X_OUTPUT (f)->nontext_cursor);
+}
+
+/* EXPORT:
+ Clear out the mouse-highlighted active region.
+ Redraw it un-highlighted first. Value is non-zero if mouse
+ face was actually drawn unhighlighted. */
+
+int
+clear_mouse_face (dpyinfo)
+ Display_Info *dpyinfo;
+{
+ int cleared = 0;
+
+ if (!NILP (dpyinfo->mouse_face_window))
+ {
+ show_mouse_face (dpyinfo, DRAW_NORMAL_TEXT);
+ cleared = 1;
+ }
+
+ dpyinfo->mouse_face_beg_row = dpyinfo->mouse_face_beg_col = -1;
+ dpyinfo->mouse_face_end_row = dpyinfo->mouse_face_end_col = -1;
+ dpyinfo->mouse_face_window = Qnil;
+ dpyinfo->mouse_face_overlay = Qnil;
+ return cleared;
+}
+
+
+/* EXPORT:
+ Non-zero if physical cursor of window W is within mouse face. */
+
+int
+cursor_in_mouse_face_p (w)
+ struct window *w;
+{
+ Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (XFRAME (w->frame));
+ int in_mouse_face = 0;
+
+ if (WINDOWP (dpyinfo->mouse_face_window)
+ && XWINDOW (dpyinfo->mouse_face_window) == w)
+ {
+ int hpos = w->phys_cursor.hpos;
+ int vpos = w->phys_cursor.vpos;
+
+ if (vpos >= dpyinfo->mouse_face_beg_row
+ && vpos <= dpyinfo->mouse_face_end_row
+ && (vpos > dpyinfo->mouse_face_beg_row
+ || hpos >= dpyinfo->mouse_face_beg_col)
+ && (vpos < dpyinfo->mouse_face_end_row
+ || hpos < dpyinfo->mouse_face_end_col
+ || dpyinfo->mouse_face_past_end))
+ in_mouse_face = 1;
+ }
+
+ return in_mouse_face;
+}
+
+
+
+\f
+/* Find the glyph matrix position of buffer position CHARPOS in window
+ *W. HPOS, *VPOS, *X, and *Y are set to the positions found. W's
+ current glyphs must be up to date. If CHARPOS is above window
+ start return (0, 0, 0, 0). If CHARPOS is after end of W, return end
+ of last line in W. In the row containing CHARPOS, stop before glyphs
+ having STOP as object. */
+
+#if 0 /* This is a version of fast_find_position that's more correct
+ in the presence of hscrolling, for example. I didn't install
+ it right away because the problem fixed is minor, it failed
+ in 20.x as well, and I think it's too risky to install
+ so near the release of 21.1. 2001-09-25 gerd. */
+
+static int
+fast_find_position (w, charpos, hpos, vpos, x, y, stop)
+ struct window *w;
+ int charpos;
+ int *hpos, *vpos, *x, *y;
+ Lisp_Object stop;
+{
+ struct glyph_row *row, *first;
+ struct glyph *glyph, *end;
+ int i, past_end = 0;
+
+ first = MATRIX_FIRST_TEXT_ROW (w->current_matrix);
+ row = row_containing_pos (w, charpos, first, NULL, 0);
+ if (row == NULL)
+ {
+ if (charpos < MATRIX_ROW_START_CHARPOS (first))
+ {
+ *x = *y = *hpos = *vpos = 0;
+ return 0;
+ }
+ else
+ {
+ row = MATRIX_ROW (w->current_matrix, XFASTINT (w->window_end_vpos));
+ past_end = 1;
+ }
+ }
+
+ *x = row->x;
+ *y = row->y;
+ *vpos = MATRIX_ROW_VPOS (row, w->current_matrix);
+
+ glyph = row->glyphs[TEXT_AREA];
+ end = glyph + row->used[TEXT_AREA];
+
+ /* Skip over glyphs not having an object at the start of the row.
+ These are special glyphs like truncation marks on terminal
+ frames. */
+ if (row->displays_text_p)
+ while (glyph < end
+ && INTEGERP (glyph->object)
+ && !EQ (stop, glyph->object)
+ && glyph->charpos < 0)
+ {
+ *x += glyph->pixel_width;
+ ++glyph;
+ }
+
+ while (glyph < end
+ && !INTEGERP (glyph->object)
+ && !EQ (stop, glyph->object)
+ && (!BUFFERP (glyph->object)
+ || glyph->charpos < charpos))
+ {
+ *x += glyph->pixel_width;
+ ++glyph;
+ }
+
+ *hpos = glyph - row->glyphs[TEXT_AREA];
+ return past_end;
+}
+
+#else /* not 0 */
+
+static int
+fast_find_position (w, pos, hpos, vpos, x, y, stop)
+ struct window *w;
+ int pos;
+ int *hpos, *vpos, *x, *y;
+ Lisp_Object stop;
+{
+ int i;
+ int lastcol;
+ int maybe_next_line_p = 0;
+ int line_start_position;
+ int yb = window_text_bottom_y (w);
+ struct glyph_row *row, *best_row;
+ int row_vpos, best_row_vpos;
+ int current_x;
+
+ row = best_row = MATRIX_FIRST_TEXT_ROW (w->current_matrix);
+ row_vpos = best_row_vpos = MATRIX_ROW_VPOS (row, w->current_matrix);
+
+ while (row->y < yb)
+ {
+ if (row->used[TEXT_AREA])
+ line_start_position = row->glyphs[TEXT_AREA]->charpos;
+ else
+ line_start_position = 0;
+
+ if (line_start_position > pos)
+ break;
+ /* If the position sought is the end of the buffer,
+ don't include the blank lines at the bottom of the window. */
+ else if (line_start_position == pos
+ && pos == BUF_ZV (XBUFFER (w->buffer)))
+ {
+ maybe_next_line_p = 1;
+ break;
+ }
+ else if (line_start_position > 0)
+ {
+ best_row = row;
+ best_row_vpos = row_vpos;
+ }
+
+ if (row->y + row->height >= yb)
+ break;
+
+ ++row;
+ ++row_vpos;
+ }
+
+ /* Find the right column within BEST_ROW. */
+ lastcol = 0;
+ current_x = best_row->x;
+ for (i = 0; i < best_row->used[TEXT_AREA]; i++)
+ {
+ struct glyph *glyph = best_row->glyphs[TEXT_AREA] + i;
+ int charpos = glyph->charpos;
+
+ if (BUFFERP (glyph->object))
+ {
+ if (charpos == pos)
+ {
+ *hpos = i;
+ *vpos = best_row_vpos;
+ *x = current_x;
+ *y = best_row->y;
+ return 1;
+ }
+ else if (charpos > pos)
+ break;
+ }
+ else if (EQ (glyph->object, stop))
+ break;
+
+ if (charpos > 0)
+ lastcol = i;
+ current_x += glyph->pixel_width;
+ }
+
+ /* If we're looking for the end of the buffer,
+ and we didn't find it in the line we scanned,
+ use the start of the following line. */
+ if (maybe_next_line_p)
+ {
+ ++best_row;
+ ++best_row_vpos;
+ lastcol = 0;
+ current_x = best_row->x;
+ }
+
+ *vpos = best_row_vpos;
+ *hpos = lastcol + 1;
+ *x = current_x;
+ *y = best_row->y;
+ return 0;
+}
+
+#endif /* not 0 */
+
+
+/* Find the position of the glyph for position POS in OBJECT in
+ window W's current matrix, and return in *X, *Y the pixel
+ coordinates, and return in *HPOS, *VPOS the column/row of the glyph.
+
+ RIGHT_P non-zero means return the position of the right edge of the
+ glyph, RIGHT_P zero means return the left edge position.
+
+ If no glyph for POS exists in the matrix, return the position of
+ the glyph with the next smaller position that is in the matrix, if
+ RIGHT_P is zero. If RIGHT_P is non-zero, and no glyph for POS
+ exists in the matrix, return the position of the glyph with the
+ next larger position in OBJECT.
+
+ Value is non-zero if a glyph was found. */
+
+static int
+fast_find_string_pos (w, pos, object, hpos, vpos, x, y, right_p)
+ struct window *w;
+ int pos;
+ Lisp_Object object;
+ int *hpos, *vpos, *x, *y;
+ int right_p;
+{
+ int yb = window_text_bottom_y (w);
+ struct glyph_row *r;
+ struct glyph *best_glyph = NULL;
+ struct glyph_row *best_row = NULL;
+ int best_x = 0;
+
+ for (r = MATRIX_FIRST_TEXT_ROW (w->current_matrix);
+ r->enabled_p && r->y < yb;
+ ++r)
+ {
+ struct glyph *g = r->glyphs[TEXT_AREA];
+ struct glyph *e = g + r->used[TEXT_AREA];
+ int gx;
+
+ for (gx = r->x; g < e; gx += g->pixel_width, ++g)
+ if (EQ (g->object, object))
+ {
+ if (g->charpos == pos)
+ {
+ best_glyph = g;
+ best_x = gx;
+ best_row = r;
+ goto found;
+ }
+ else if (best_glyph == NULL
+ || ((abs (g->charpos - pos)
+ < abs (best_glyph->charpos - pos))
+ && (right_p
+ ? g->charpos < pos
+ : g->charpos > pos)))
+ {
+ best_glyph = g;
+ best_x = gx;
+ best_row = r;
+ }
+ }
+ }
+
+ found:
+
+ if (best_glyph)
+ {
+ *x = best_x;
+ *hpos = best_glyph - best_row->glyphs[TEXT_AREA];
+
+ if (right_p)
+ {
+ *x += best_glyph->pixel_width;
+ ++*hpos;
+ }
+
+ *y = best_row->y;
+ *vpos = best_row - w->current_matrix->rows;
+ }
+
+ return best_glyph != NULL;
+}
+
+
+#ifdef HAVE_CARBON
+
+/* ++KFS: Why does MAC have its own version here? Looks like OLD CODE!! */
+
+/* Take proper action when mouse has moved to the mode or header line of
+ window W, x-position X. MODE_LINE_P non-zero means mouse is on the
+ mode line. X is relative to the start of the text display area of
+ W, so the width of fringes and scroll bars must be subtracted
+ to get a position relative to the start of the mode line. */
+
+static void
+note_mode_line_highlight (w, x, mode_line_p)
+ struct window *w;
+ int x, mode_line_p;
+{
+ struct frame *f = XFRAME (w->frame);
+ struct mac_display_info *dpyinfo = FRAME_MAC_DISPLAY_INFO (f);
+ Cursor *cursor = dpyinfo->vertical_scroll_bar_cursor;
+ struct glyph_row *row;
+
+ if (mode_line_p)
+ row = MATRIX_MODE_LINE_ROW (w->current_matrix);
+ else
+ row = MATRIX_HEADER_LINE_ROW (w->current_matrix);
+
+ if (row->enabled_p)
+ {
+ struct glyph *glyph, *end;
+ Lisp_Object help, map;
+ int x0;
+
+ /* Find the glyph under X. */
+ glyph = row->glyphs[TEXT_AREA];
+ end = glyph + row->used[TEXT_AREA];
+ x0 = - (FRAME_LEFT_SCROLL_BAR_WIDTH (f) * CANON_X_UNIT (f)
+ + FRAME_X_LEFT_FRINGE_WIDTH (f));
+
+ while (glyph < end
+ && x >= x0 + glyph->pixel_width)
+ {
+ x0 += glyph->pixel_width;
+ ++glyph;
+ }
+
+ if (glyph < end
+ && STRINGP (glyph->object)
+ && STRING_INTERVALS (glyph->object)
+ && glyph->charpos >= 0
+ && glyph->charpos < SCHARS (glyph->object))
+ {
+ /* If we're on a string with `help-echo' text property,
+ arrange for the help to be displayed. This is done by
+ setting the global variable help_echo_string to the help
+ string. */
+ help = Fget_text_property (make_number (glyph->charpos),
+ Qhelp_echo, glyph->object);
+ if (!NILP (help))
+ {
+ help_echo_string = help;
+ XSETWINDOW (help_echo_window, w);
+ help_echo_object = glyph->object;
+ help_echo_pos = glyph->charpos;
+ }
+
+ /* Change the mouse pointer according to what is under X/Y. */
+ map = Fget_text_property (make_number (glyph->charpos),
+ Qlocal_map, glyph->object);
+ if (KEYMAPP (map))
+ cursor = f->output_data.mac->nontext_cursor;
+ else
+ {
+ map = Fget_text_property (make_number (glyph->charpos),
+ Qkeymap, glyph->object);
+ if (KEYMAPP (map))
+ cursor = f->output_data.mac->nontext_cursor;
+ }
+ }
+ }
+
+ rif->define_frame_cursor (f, cursor);
+}
+
+#else
+
+/* Take proper action when mouse has moved to the mode or header line
+ or marginal area AREA of window W, x-position X and y-position Y.
+ X is relative to the start of the text display area of W, so the
+ width of bitmap areas and scroll bars must be subtracted to get a
+ position relative to the start of the mode line. */
+
+static void
+note_mode_line_or_margin_highlight (w, x, y, area)
+ struct window *w;
+ int x, y;
+ enum window_part area;
+{
+ struct frame *f = XFRAME (w->frame);
+ Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
+ Cursor cursor = dpyinfo->vertical_scroll_bar_cursor;
+ int charpos;
+ Lisp_Object string, help, map, pos;
+
+ if (area == ON_MODE_LINE || area == ON_HEADER_LINE)
+ string = mode_line_string (w, x, y, area, &charpos);
+ else
+ string = marginal_area_string (w, x, y, area, &charpos);
+
+ if (STRINGP (string))
+ {
+ pos = make_number (charpos);
+
+ /* If we're on a string with `help-echo' text property, arrange
+ for the help to be displayed. This is done by setting the
+ global variable help_echo_string to the help string. */
+ help = Fget_text_property (pos, Qhelp_echo, string);
+ if (!NILP (help))
+ {
+ help_echo_string = help;
+ XSETWINDOW (help_echo_window, w);
+ help_echo_object = string;
+ help_echo_pos = charpos;
+ }
+
+ /* Change the mouse pointer according to what is under X/Y. */
+ map = Fget_text_property (pos, Qlocal_map, string);
+ if (!KEYMAPP (map))
+ map = Fget_text_property (pos, Qkeymap, string);
+ if (KEYMAPP (map))
+ cursor = FRAME_X_OUTPUT (f)->nontext_cursor;
+ }
+
+ rif->define_frame_cursor (f, cursor);
+}
+
+#endif /* !HAVE_CARBON */
+
+
+/* EXPORT:
+ Take proper action when the mouse has moved to position X, Y on
+ frame F as regards highlighting characters that have mouse-face
+ properties. Also de-highlighting chars where the mouse was before.
+ X and Y can be negative or out of range. */
+
+void
+note_mouse_highlight (f, x, y)
+ struct frame *f;
+ int x, y;
+{
+ Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
+ enum window_part part;
+ Lisp_Object window;
+ struct window *w;
+ Cursor cursor = No_Cursor;
+ struct buffer *b;
+
+ /* When a menu is active, don't highlight because this looks odd. */
+#if defined (USE_X_TOOLKIT) || defined (USE_GTK) || defined (HAVE_NTGUI)
+ if (popup_activated ())
+ return;
+#endif
+
+ if (NILP (Vmouse_highlight)
+ || !f->glyphs_initialized_p)
+ return;
+
+ dpyinfo->mouse_face_mouse_x = x;
+ dpyinfo->mouse_face_mouse_y = y;
+ dpyinfo->mouse_face_mouse_frame = f;
+
+ if (dpyinfo->mouse_face_defer)
+ return;
+
+ if (gc_in_progress)
+ {
+ dpyinfo->mouse_face_deferred_gc = 1;
+ return;
+ }
+
+ /* Which window is that in? */
+ window = window_from_coordinates (f, x, y, &part, 1);
+
+ /* If we were displaying active text in another window, clear that. */
+ if (! EQ (window, dpyinfo->mouse_face_window))
+ clear_mouse_face (dpyinfo);
+
+ /* Not on a window -> return. */
+ if (!WINDOWP (window))
+ return;
+
+ /* Reset help_echo_string. It will get recomputed below. */
+ /* ++KFS: X version didn't do this, but it looks harmless. */
+ help_echo_string = Qnil;
+
+ /* Convert to window-relative pixel coordinates. */
+ w = XWINDOW (window);
+ frame_to_window_pixel_xy (w, &x, &y);
+
+ /* Handle tool-bar window differently since it doesn't display a
+ buffer. */
+ if (EQ (window, f->tool_bar_window))
+ {
+ note_tool_bar_highlight (f, x, y);
+ return;
+ }
+
+#ifdef HAVE_CARBON
+ /* ++KFS: Why does MAC have its own version here? Looks like OLD CODE!! */
+
+ /* Mouse is on the mode or header line? */
+ if (part == ON_MODE_LINE || part == ON_HEADER_LINE)
+ {
+ note_mode_line_highlight (w, x, part == ON_MODE_LINE);
+ return;
+ }
+#else
+ /* Mouse is on the mode, header line or margin? */
+ if (part == ON_MODE_LINE || part == ON_HEADER_LINE
+ || part == ON_LEFT_MARGIN || part == ON_RIGHT_MARGIN)
+ {
+ note_mode_line_or_margin_highlight (w, x, y, part);
+ return;
+ }
+#endif
+
+ if (part == ON_VERTICAL_BORDER)
+ cursor = FRAME_X_OUTPUT (f)->horizontal_drag_cursor;
+ else
+ cursor = FRAME_X_OUTPUT (f)->text_cursor;
+
+ /* Are we in a window whose display is up to date?
+ And verify the buffer's text has not changed. */
+ b = XBUFFER (w->buffer);
+ if (part == ON_TEXT
+ && EQ (w->window_end_valid, w->buffer)
+ && XFASTINT (w->last_modified) == BUF_MODIFF (b)
+ && XFASTINT (w->last_overlay_modified) == BUF_OVERLAY_MODIFF (b))
+ {
+ int hpos, vpos, pos, i, area;
+ struct glyph *glyph;
+ Lisp_Object object;
+ Lisp_Object mouse_face = Qnil, overlay = Qnil, position;
+ Lisp_Object *overlay_vec = NULL;
+ int len, noverlays;
+ struct buffer *obuf;
+ int obegv, ozv, same_region;
+
+ /* Find the glyph under X/Y. */
+ glyph = x_y_to_hpos_vpos (w, x, y, &hpos, &vpos, &area, 0);
+
+ /* Clear mouse face if X/Y not over text. */
+ if (glyph == NULL
+ || area != TEXT_AREA
+ || !MATRIX_ROW (w->current_matrix, vpos)->displays_text_p)
+ {
+#if defined (HAVE_NTGUI)
+ /* ++KFS: Why is this necessary on W32 ? */
+ clear_mouse_face (dpyinfo);
+ cursor = FRAME_X_OUTPUT (f)->nontext_cursor;
+#else
+ if (clear_mouse_face (dpyinfo))
+ cursor = No_Cursor;
+#endif
+ goto set_cursor;
+ }
+
+ pos = glyph->charpos;
+ object = glyph->object;
+ if (!STRINGP (object) && !BUFFERP (object))
+ goto set_cursor;
+
+ /* If we get an out-of-range value, return now; avoid an error. */
+ if (BUFFERP (object) && pos > BUF_Z (b))
+ goto set_cursor;
+
+ /* Make the window's buffer temporarily current for
+ overlays_at and compute_char_face. */
+ obuf = current_buffer;
+ current_buffer = b;
+ obegv = BEGV;
+ ozv = ZV;
+ BEGV = BEG;
+ ZV = Z;
+
+ /* Is this char mouse-active or does it have help-echo? */
+ position = make_number (pos);
+
+ if (BUFFERP (object))
+ {
+ /* Put all the overlays we want in a vector in overlay_vec.
+ Store the length in len. If there are more than 10, make
+ enough space for all, and try again. */
+ len = 10;
+ overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object));
+ noverlays = overlays_at (pos, 0, &overlay_vec, &len, NULL, NULL, 0);
+ if (noverlays > len)
+ {
+ len = noverlays;
+ overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object));
+ noverlays = overlays_at (pos, 0, &overlay_vec, &len, NULL, NULL,0);
+ }
+
+ /* Sort overlays into increasing priority order. */
+ noverlays = sort_overlays (overlay_vec, noverlays, w);
+ }
+ else
+ noverlays = 0;
+
+ same_region = (EQ (window, dpyinfo->mouse_face_window)
+ && vpos >= dpyinfo->mouse_face_beg_row
+ && vpos <= dpyinfo->mouse_face_end_row
+ && (vpos > dpyinfo->mouse_face_beg_row
+ || hpos >= dpyinfo->mouse_face_beg_col)
+ && (vpos < dpyinfo->mouse_face_end_row
+ || hpos < dpyinfo->mouse_face_end_col
+ || dpyinfo->mouse_face_past_end));
+
+ if (same_region)
+ cursor = No_Cursor;
+
+ /* Check mouse-face highlighting. */
+ if (! same_region
+ /* If there exists an overlay with mouse-face overlapping
+ the one we are currently highlighting, we have to
+ check if we enter the overlapping overlay, and then
+ highlight only that. */
+ || (OVERLAYP (dpyinfo->mouse_face_overlay)
+ && mouse_face_overlay_overlaps (dpyinfo->mouse_face_overlay)))
+ {
+ /* Find the highest priority overlay that has a mouse-face
+ property. */
+ overlay = Qnil;
+ for (i = noverlays - 1; i >= 0 && NILP (overlay); --i)
+ {
+ mouse_face = Foverlay_get (overlay_vec[i], Qmouse_face);
+ if (!NILP (mouse_face))
+ overlay = overlay_vec[i];
+ }
+
+ /* If we're actually highlighting the same overlay as
+ before, there's no need to do that again. */
+ if (!NILP (overlay)
+ && EQ (overlay, dpyinfo->mouse_face_overlay))
+ goto check_help_echo;
+
+ dpyinfo->mouse_face_overlay = overlay;
+
+ /* Clear the display of the old active region, if any. */
+ if (clear_mouse_face (dpyinfo))
+ cursor = No_Cursor;
+
+ /* If no overlay applies, get a text property. */
+ if (NILP (overlay))
+ mouse_face = Fget_text_property (position, Qmouse_face, object);
+
+ /* Handle the overlay case. */
+ if (!NILP (overlay))
+ {
+ /* Find the range of text around this char that
+ should be active. */
+ Lisp_Object before, after;
+ int ignore;
+
+ before = Foverlay_start (overlay);
+ after = Foverlay_end (overlay);
+ /* Record this as the current active region. */
+ fast_find_position (w, XFASTINT (before),
+ &dpyinfo->mouse_face_beg_col,
+ &dpyinfo->mouse_face_beg_row,
+ &dpyinfo->mouse_face_beg_x,
+ &dpyinfo->mouse_face_beg_y, Qnil);
+
+ dpyinfo->mouse_face_past_end
+ = !fast_find_position (w, XFASTINT (after),
+ &dpyinfo->mouse_face_end_col,
+ &dpyinfo->mouse_face_end_row,
+ &dpyinfo->mouse_face_end_x,
+ &dpyinfo->mouse_face_end_y, Qnil);
+ dpyinfo->mouse_face_window = window;
+
+ dpyinfo->mouse_face_face_id
+ = face_at_buffer_position (w, pos, 0, 0,
+ &ignore, pos + 1,
+ !dpyinfo->mouse_face_hidden);
+
+ /* Display it as active. */
+ show_mouse_face (dpyinfo, DRAW_MOUSE_FACE);
+ cursor = No_Cursor;
+ }
+ /* Handle the text property case. */
+ else if (!NILP (mouse_face) && BUFFERP (object))
+ {
+ /* Find the range of text around this char that
+ should be active. */
+ Lisp_Object before, after, beginning, end;
+ int ignore;
+
+ beginning = Fmarker_position (w->start);
+ end = make_number (BUF_Z (XBUFFER (object))
+ - XFASTINT (w->window_end_pos));
+ before
+ = Fprevious_single_property_change (make_number (pos + 1),
+ Qmouse_face,
+ object, beginning);
+ after
+ = Fnext_single_property_change (position, Qmouse_face,
+ object, end);
+
+ /* Record this as the current active region. */
+ fast_find_position (w, XFASTINT (before),
+ &dpyinfo->mouse_face_beg_col,
+ &dpyinfo->mouse_face_beg_row,
+ &dpyinfo->mouse_face_beg_x,
+ &dpyinfo->mouse_face_beg_y, Qnil);
+ dpyinfo->mouse_face_past_end
+ = !fast_find_position (w, XFASTINT (after),
+ &dpyinfo->mouse_face_end_col,
+ &dpyinfo->mouse_face_end_row,
+ &dpyinfo->mouse_face_end_x,
+ &dpyinfo->mouse_face_end_y, Qnil);
+ dpyinfo->mouse_face_window = window;
+
+ if (BUFFERP (object))
+ dpyinfo->mouse_face_face_id
+ = face_at_buffer_position (w, pos, 0, 0,
+ &ignore, pos + 1,
+ !dpyinfo->mouse_face_hidden);
+
+ /* Display it as active. */
+ show_mouse_face (dpyinfo, DRAW_MOUSE_FACE);
+ cursor = No_Cursor;
+ }
+ else if (!NILP (mouse_face) && STRINGP (object))
+ {
+ Lisp_Object b, e;
+ int ignore;
+
+ b = Fprevious_single_property_change (make_number (pos + 1),
+ Qmouse_face,
+ object, Qnil);
+ e = Fnext_single_property_change (position, Qmouse_face,
+ object, Qnil);
+ if (NILP (b))
+ b = make_number (0);
+ if (NILP (e))
+ e = make_number (SCHARS (object) - 1);
+ fast_find_string_pos (w, XINT (b), object,
+ &dpyinfo->mouse_face_beg_col,
+ &dpyinfo->mouse_face_beg_row,
+ &dpyinfo->mouse_face_beg_x,
+ &dpyinfo->mouse_face_beg_y, 0);
+ fast_find_string_pos (w, XINT (e), object,
+ &dpyinfo->mouse_face_end_col,
+ &dpyinfo->mouse_face_end_row,
+ &dpyinfo->mouse_face_end_x,
+ &dpyinfo->mouse_face_end_y, 1);
+ dpyinfo->mouse_face_past_end = 0;
+ dpyinfo->mouse_face_window = window;
+ dpyinfo->mouse_face_face_id
+ = face_at_string_position (w, object, pos, 0, 0, 0, &ignore,
+ glyph->face_id, 1);
+ show_mouse_face (dpyinfo, DRAW_MOUSE_FACE);
+ cursor = No_Cursor;
+ }
+ else if (STRINGP (object) && NILP (mouse_face))
+ {
+ /* A string which doesn't have mouse-face, but
+ the text ``under'' it might have. */
+ struct glyph_row *r = MATRIX_ROW (w->current_matrix, vpos);
+ int start = MATRIX_ROW_START_CHARPOS (r);
+
+ pos = string_buffer_position (w, object, start);
+ if (pos > 0)
+ mouse_face = get_char_property_and_overlay (make_number (pos),
+ Qmouse_face,
+ w->buffer,
+ &overlay);
+ if (!NILP (mouse_face) && !NILP (overlay))
+ {
+ Lisp_Object before = Foverlay_start (overlay);
+ Lisp_Object after = Foverlay_end (overlay);
+ int ignore;
+
+ /* Note that we might not be able to find position
+ BEFORE in the glyph matrix if the overlay is
+ entirely covered by a `display' property. In
+ this case, we overshoot. So let's stop in
+ the glyph matrix before glyphs for OBJECT. */
+ fast_find_position (w, XFASTINT (before),
+ &dpyinfo->mouse_face_beg_col,
+ &dpyinfo->mouse_face_beg_row,
+ &dpyinfo->mouse_face_beg_x,
+ &dpyinfo->mouse_face_beg_y,
+ object);
+
+ dpyinfo->mouse_face_past_end
+ = !fast_find_position (w, XFASTINT (after),
+ &dpyinfo->mouse_face_end_col,
+ &dpyinfo->mouse_face_end_row,
+ &dpyinfo->mouse_face_end_x,
+ &dpyinfo->mouse_face_end_y,
+ Qnil);
+ dpyinfo->mouse_face_window = window;
+ dpyinfo->mouse_face_face_id
+ = face_at_buffer_position (w, pos, 0, 0,
+ &ignore, pos + 1,
+ !dpyinfo->mouse_face_hidden);
+
+ /* Display it as active. */
+ show_mouse_face (dpyinfo, DRAW_MOUSE_FACE);
+ cursor = No_Cursor;
+ }
+ }
+ }
+
+ check_help_echo:
+
+ /* Look for a `help-echo' property. */
+ {
+ Lisp_Object help, overlay;
+
+ /* Check overlays first. */
+ help = overlay = Qnil;
+ for (i = noverlays - 1; i >= 0 && NILP (help); --i)
+ {
+ overlay = overlay_vec[i];
+ help = Foverlay_get (overlay, Qhelp_echo);
+ }
+
+ if (!NILP (help))
+ {
+ help_echo_string = help;
+ help_echo_window = window;
+ help_echo_object = overlay;
+ help_echo_pos = pos;
+ }
+ else
+ {
+ Lisp_Object object = glyph->object;
+ int charpos = glyph->charpos;
+
+ /* Try text properties. */
+ if (STRINGP (object)
+ && charpos >= 0
+ && charpos < SCHARS (object))
+ {
+ help = Fget_text_property (make_number (charpos),
+ Qhelp_echo, object);
+ if (NILP (help))
+ {
+ /* If the string itself doesn't specify a help-echo,
+ see if the buffer text ``under'' it does. */
+ struct glyph_row *r
+ = MATRIX_ROW (w->current_matrix, vpos);
+ int start = MATRIX_ROW_START_CHARPOS (r);
+ int pos = string_buffer_position (w, object, start);
+ if (pos > 0)
+ {
+ help = Fget_char_property (make_number (pos),
+ Qhelp_echo, w->buffer);
+ if (!NILP (help))
+ {
+ charpos = pos;
+ object = w->buffer;
+ }
+ }
+ }
+ }
+ else if (BUFFERP (object)
+ && charpos >= BEGV
+ && charpos < ZV)
+ help = Fget_text_property (make_number (charpos), Qhelp_echo,
+ object);
+
+ if (!NILP (help))
+ {
+ help_echo_string = help;
+ help_echo_window = window;
+ help_echo_object = object;
+ help_echo_pos = charpos;
+ }
+ }
+ }
+
+ BEGV = obegv;
+ ZV = ozv;
+ current_buffer = obuf;
+ }
+
+ set_cursor:
+
+ if (cursor != No_Cursor)
+ rif->define_frame_cursor (f, cursor);
+}
+
+
+/* EXPORT for RIF:
+ Clear any mouse-face on window W. This function is part of the
+ redisplay interface, and is called from try_window_id and similar
+ functions to ensure the mouse-highlight is off. */
+
+void
+x_clear_window_mouse_face (w)
+ struct window *w;
+{
+ Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (XFRAME (w->frame));
+ Lisp_Object window;
+
+ BLOCK_INPUT;
+ XSETWINDOW (window, w);
+ if (EQ (window, dpyinfo->mouse_face_window))
+ clear_mouse_face (dpyinfo);
+ UNBLOCK_INPUT;
+}
+
+
+/* EXPORT:
+ Just discard the mouse face information for frame F, if any.
+ This is used when the size of F is changed. */
+
+void
+cancel_mouse_face (f)
+ struct frame *f;
+{
+ Lisp_Object window;
+ Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
+
+ window = dpyinfo->mouse_face_window;
+ if (! NILP (window) && XFRAME (XWINDOW (window)->frame) == f)
+ {
+ dpyinfo->mouse_face_beg_row = dpyinfo->mouse_face_beg_col = -1;
+ dpyinfo->mouse_face_end_row = dpyinfo->mouse_face_end_col = -1;
+ dpyinfo->mouse_face_window = Qnil;
+ }
+}
+
+
+#endif /* HAVE_WINDOW_SYSTEM */
+
+\f
+/***********************************************************************
+ Exposure Events
+ ***********************************************************************/
+
+#ifdef HAVE_WINDOW_SYSTEM
+
+/* Redraw the part of glyph row area AREA of glyph row ROW on window W
+ which intersects rectangle R. R is in window-relative coordinates. */
+
+static void
+expose_area (w, row, r, area)
+ struct window *w;
+ struct glyph_row *row;
+ XRectangle *r;
+ enum glyph_row_area area;
+{
+ struct glyph *first = row->glyphs[area];
+ struct glyph *end = row->glyphs[area] + row->used[area];
+ struct glyph *last;
+ int first_x, start_x, x;
+
+ if (area == TEXT_AREA && row->fill_line_p)
+ /* If row extends face to end of line write the whole line. */
+ draw_glyphs (w, 0, row, area,
+ 0, row->used[area],
+ DRAW_NORMAL_TEXT, 0);
+ else
+ {
+ /* Set START_X to the window-relative start position for drawing glyphs of
+ AREA. The first glyph of the text area can be partially visible.
+ The first glyphs of other areas cannot. */
+ if (area == LEFT_MARGIN_AREA)
+ start_x = 0;
+ else if (area == TEXT_AREA)
+ start_x = row->x + window_box_width (w, LEFT_MARGIN_AREA);
+ else
+ start_x = (window_box_width (w, LEFT_MARGIN_AREA)
+ + window_box_width (w, TEXT_AREA));
+ x = start_x;
+
+ /* Find the first glyph that must be redrawn. */
+ while (first < end
+ && x + first->pixel_width < r->x)
+ {
+ x += first->pixel_width;
+ ++first;
+ }
+
+ /* Find the last one. */
+ last = first;
+ first_x = x;
+ while (last < end
+ && x < r->x + r->width)
+ {
+ x += last->pixel_width;
+ ++last;
+ }
+
+ /* Repaint. */
+ if (last > first)
+ draw_glyphs (w, first_x - start_x, row, area,
+ first - row->glyphs[area], last - row->glyphs[area],
+ DRAW_NORMAL_TEXT, 0);
+ }
+}
+
+
+/* Redraw the parts of the glyph row ROW on window W intersecting
+ rectangle R. R is in window-relative coordinates. Value is
+ non-zero if mouse-face was overwritten. */
+
+static int
+expose_line (w, row, r)
+ struct window *w;
+ struct glyph_row *row;
+ XRectangle *r;
+{
+ xassert (row->enabled_p);
+
+ if (row->mode_line_p || w->pseudo_window_p)
+ draw_glyphs (w, 0, row, TEXT_AREA,
+ 0, row->used[TEXT_AREA],
+ DRAW_NORMAL_TEXT, 0);
+ else
+ {
+ if (row->used[LEFT_MARGIN_AREA])
+ expose_area (w, row, r, LEFT_MARGIN_AREA);
+ if (row->used[TEXT_AREA])
+ expose_area (w, row, r, TEXT_AREA);
+ if (row->used[RIGHT_MARGIN_AREA])
+ expose_area (w, row, r, RIGHT_MARGIN_AREA);
+ draw_row_fringe_bitmaps (w, row);
}
- if (EQ (arg, Qhbar))
- {
- *width = 2;
- return HBAR_CURSOR;
- }
+ return row->mouse_face_p;
+}
+
+
+/* Redraw those parts of glyphs rows during expose event handling that
+ overlap other rows. Redrawing of an exposed line writes over parts
+ of lines overlapping that exposed line; this function fixes that.
+
+ W is the window being exposed. FIRST_OVERLAPPING_ROW is the first
+ row in W's current matrix that is exposed and overlaps other rows.
+ LAST_OVERLAPPING_ROW is the last such row. */
+
+static void
+expose_overlaps (w, first_overlapping_row, last_overlapping_row)
+ struct window *w;
+ struct glyph_row *first_overlapping_row;
+ struct glyph_row *last_overlapping_row;
+{
+ struct glyph_row *row;
+
+ for (row = first_overlapping_row; row <= last_overlapping_row; ++row)
+ if (row->overlapping_p)
+ {
+ xassert (row->enabled_p && !row->mode_line_p);
+
+ if (row->used[LEFT_MARGIN_AREA])
+ x_fix_overlapping_area (w, row, LEFT_MARGIN_AREA);
- if (CONSP (arg)
- && EQ (XCAR (arg), Qhbar)
- && INTEGERP (XCDR (arg))
- && XINT (XCDR (arg)) >= 0)
+ if (row->used[TEXT_AREA])
+ x_fix_overlapping_area (w, row, TEXT_AREA);
+
+ if (row->used[RIGHT_MARGIN_AREA])
+ x_fix_overlapping_area (w, row, RIGHT_MARGIN_AREA);
+ }
+}
+
+
+/* Return non-zero if W's cursor intersects rectangle R. */
+
+static int
+phys_cursor_in_rect_p (w, r)
+ struct window *w;
+ XRectangle *r;
+{
+ XRectangle cr, result;
+ struct glyph *cursor_glyph;
+
+ cursor_glyph = get_phys_cursor_glyph (w);
+ if (cursor_glyph)
{
- *width = XINT (XCDR (arg));
- return HBAR_CURSOR;
+ cr.x = w->phys_cursor.x;
+ cr.y = w->phys_cursor.y;
+ cr.width = cursor_glyph->pixel_width;
+ cr.height = w->phys_cursor_height;
+ /* ++KFS: W32 version used W32-specific IntersectRect here, but
+ I assume the effect is the same -- and this is portable. */
+ return x_intersect_rectangles (&cr, r, &result);
}
+ else
+ return 0;
+}
- /* Treat anything unknown as "hollow box cursor".
- It was bad to signal an error; people have trouble fixing
- .Xdefaults with Emacs, when it has something bad in it. */
- type = HOLLOW_BOX_CURSOR;
- return type;
-}
+/* EXPORT:
+ Draw a vertical window border to the right of window W if W doesn't
+ have vertical scroll bars. */
-/* Set the default cursor types for specified frame. */
void
-set_frame_cursor_types (f, arg)
- struct frame *f;
- Lisp_Object arg;
+x_draw_vertical_border (w)
+ struct window *w;
{
- int width;
- Lisp_Object tem;
+ struct frame *f = XFRAME (WINDOW_FRAME (w));
- FRAME_DESIRED_CURSOR (f) = get_specified_cursor_type (arg, &width);
- FRAME_CURSOR_WIDTH (f) = width;
+ /* Redraw borders between horizontally adjacent windows. Don't
+ do it for frames with vertical scroll bars because either the
+ right scroll bar of a window, or the left scroll bar of its
+ neighbor will suffice as a border. */
+ if (!WINDOW_RIGHTMOST_P (w)
+ && !FRAME_HAS_VERTICAL_SCROLL_BARS (f))
+ {
+ int x0, x1, y0, y1;
- /* By default, set up the blink-off state depending on the on-state. */
+ window_box_edges (w, -1, &x0, &y0, &x1, &y1);
+ x1 += FRAME_X_RIGHT_FRINGE_WIDTH (f);
+ y1 -= 1;
- tem = Fassoc (arg, Vblink_cursor_alist);
- if (!NILP (tem))
- {
- FRAME_BLINK_OFF_CURSOR (f)
- = get_specified_cursor_type (XCDR (tem), &width);
- FRAME_BLINK_OFF_CURSOR_WIDTH (f) = width;
+ rif->draw_vertical_window_border (w, x1, y0, y1);
}
- else
- FRAME_BLINK_OFF_CURSOR (f) = DEFAULT_CURSOR;
}
-/* Return the cursor we want to be displayed in window W. Return
- width of bar/hbar cursor through WIDTH arg. Return with
- ACTIVE_CURSOR arg set to 1 if cursor in window W is `active'
- (i.e. if the `system caret' should track this cursor).
-
- In a mini-buffer window, we want the cursor only to appear if we
- are reading input from this window. For the selected window, we
- want the cursor type given by the frame parameter or buffer local
- setting of cursor-type. If explicitly marked off, draw no cursor.
- In all other cases, we want a hollow box cursor. */
+/* Redraw the part of window W intersection rectangle FR. Pixel
+ coordinates in FR are frame-relative. Call this function with
+ input blocked. Value is non-zero if the exposure overwrites
+ mouse-face. */
-enum text_cursor_kinds
-get_window_cursor_type (w, width, active_cursor)
+static int
+expose_window (w, fr)
struct window *w;
- int *width;
- int *active_cursor;
+ XRectangle *fr;
{
struct frame *f = XFRAME (w->frame);
- struct buffer *b = XBUFFER (w->buffer);
- int cursor_type = DEFAULT_CURSOR;
- Lisp_Object alt_cursor;
- int non_selected = 0;
+ XRectangle wr, r;
+ int mouse_face_overwritten_p = 0;
+
+ /* If window is not yet fully initialized, do nothing. This can
+ happen when toolkit scroll bars are used and a window is split.
+ Reconfiguring the scroll bar will generate an expose for a newly
+ created window. */
+ if (w->current_matrix == NULL)
+ return 0;
- *active_cursor = 1;
+ /* When we're currently updating the window, display and current
+ matrix usually don't agree. Arrange for a thorough display
+ later. */
+ if (w == updated_window)
+ {
+ SET_FRAME_GARBAGED (f);
+ return 0;
+ }
- /* Echo area */
- if (cursor_in_echo_area
- && FRAME_HAS_MINIBUF_P (f)
- && EQ (FRAME_MINIBUF_WINDOW (f), echo_area_window))
+ /* Frame-relative pixel rectangle of W. */
+ wr.x = XFASTINT (w->left) * CANON_X_UNIT (f);
+ wr.y = XFASTINT (w->top) * CANON_Y_UNIT (f);
+ wr.width = XFASTINT (w->width) * CANON_X_UNIT (f);
+ wr.height = XFASTINT (w->height) * CANON_Y_UNIT (f);
+
+ if (x_intersect_rectangles (fr, &wr, &r))
{
- if (w == XWINDOW (echo_area_window))
+ int yb = window_text_bottom_y (w);
+ struct glyph_row *row;
+ int cursor_cleared_p;
+ struct glyph_row *first_overlapping_row, *last_overlapping_row;
+
+ TRACE ((stderr, "expose_window (%d, %d, %d, %d)\n",
+ r.x, r.y, r.width, r.height));
+
+ /* Convert to window coordinates. */
+ r.x = FRAME_TO_WINDOW_PIXEL_X (w, r.x);
+ r.y = FRAME_TO_WINDOW_PIXEL_Y (w, r.y);
+
+ /* Turn off the cursor. */
+ if (!w->pseudo_window_p
+ && phys_cursor_in_rect_p (w, &r))
{
- *width = FRAME_CURSOR_WIDTH (f);
- return FRAME_DESIRED_CURSOR (f);
+ x_clear_cursor (w);
+ cursor_cleared_p = 1;
}
+ else
+ cursor_cleared_p = 0;
- *active_cursor = 0;
- non_selected = 1;
- }
+ /* Update lines intersecting rectangle R. */
+ first_overlapping_row = last_overlapping_row = NULL;
+ for (row = w->current_matrix->rows;
+ row->enabled_p;
+ ++row)
+ {
+ int y0 = row->y;
+ int y1 = MATRIX_ROW_BOTTOM_Y (row);
- /* Nonselected window or nonselected frame. */
- else if (w != XWINDOW (f->selected_window)
-#ifdef HAVE_WINDOW_SYSTEM
- || f != FRAME_X_DISPLAY_INFO (f)->x_highlight_frame
-#endif
- )
- {
- *active_cursor = 0;
+ if ((y0 >= r.y && y0 < r.y + r.height)
+ || (y1 > r.y && y1 < r.y + r.height)
+ || (r.y >= y0 && r.y < y1)
+ || (r.y + r.height > y0 && r.y + r.height < y1))
+ {
+ if (row->overlapping_p)
+ {
+ if (first_overlapping_row == NULL)
+ first_overlapping_row = row;
+ last_overlapping_row = row;
+ }
- if (MINI_WINDOW_P (w) && minibuf_level == 0)
- return NO_CURSOR;
+ if (expose_line (w, row, &r))
+ mouse_face_overwritten_p = 1;
+ }
- non_selected = 1;
- }
+ if (y1 >= yb)
+ break;
+ }
- /* Never display a cursor in a window in which cursor-type is nil. */
- if (NILP (b->cursor_type))
- return NO_CURSOR;
+ /* Display the mode line if there is one. */
+ if (WINDOW_WANTS_MODELINE_P (w)
+ && (row = MATRIX_MODE_LINE_ROW (w->current_matrix),
+ row->enabled_p)
+ && row->y < r.y + r.height)
+ {
+ if (expose_line (w, row, &r))
+ mouse_face_overwritten_p = 1;
+ }
- /* Use cursor-in-non-selected-windows for non-selected window or frame. */
- if (non_selected)
+ if (!w->pseudo_window_p)
+ {
+ /* Fix the display of overlapping rows. */
+ if (first_overlapping_row)
+ expose_overlaps (w, first_overlapping_row, last_overlapping_row);
+
+ /* Draw border between windows. */
+ x_draw_vertical_border (w);
+
+ /* Turn the cursor on again. */
+ if (cursor_cleared_p)
+ update_window_cursor (w, 1);
+ }
+ }
+
+#ifdef HAVE_CARBON
+ /* Display scroll bar for this window. */
+ if (!NILP (w->vertical_scroll_bar))
{
- alt_cursor = Fbuffer_local_value (Qcursor_in_non_selected_windows, w->buffer);
- return get_specified_cursor_type (alt_cursor, width);
+ /* ++KFS:
+ If this doesn't work here (maybe some header files are missing),
+ make a function in macterm.c and call it to do the job! */
+ ControlHandle ch
+ = SCROLL_BAR_CONTROL_HANDLE (XSCROLL_BAR (w->vertical_scroll_bar));
+
+ Draw1Control (ch);
}
+#endif
- /* Get the normal cursor type for this window. */
- if (EQ (b->cursor_type, Qt))
+ return mouse_face_overwritten_p;
+}
+
+
+
+/* Redraw (parts) of all windows in the window tree rooted at W that
+ intersect R. R contains frame pixel coordinates. Value is
+ non-zero if the exposure overwrites mouse-face. */
+
+static int
+expose_window_tree (w, r)
+ struct window *w;
+ XRectangle *r;
+{
+ struct frame *f = XFRAME (w->frame);
+ int mouse_face_overwritten_p = 0;
+
+ while (w && !FRAME_GARBAGED_P (f))
{
- cursor_type = FRAME_DESIRED_CURSOR (f);
- *width = FRAME_CURSOR_WIDTH (f);
+ if (!NILP (w->hchild))
+ mouse_face_overwritten_p
+ |= expose_window_tree (XWINDOW (w->hchild), r);
+ else if (!NILP (w->vchild))
+ mouse_face_overwritten_p
+ |= expose_window_tree (XWINDOW (w->vchild), r);
+ else
+ mouse_face_overwritten_p |= expose_window (w, r);
+
+ w = NILP (w->next) ? NULL : XWINDOW (w->next);
}
- else
- cursor_type = get_specified_cursor_type (b->cursor_type, width);
- /* Use normal cursor if not blinked off. */
- if (!w->cursor_off_p)
- return cursor_type;
+ return mouse_face_overwritten_p;
+}
- /* Cursor is blinked off, so determine how to "toggle" it. */
- /* First look for an entry matching the buffer's cursor-type in blink-cursor-alist. */
- if ((alt_cursor = Fassoc (b->cursor_type, Vblink_cursor_alist), !NILP (alt_cursor)))
- return get_specified_cursor_type (XCDR (alt_cursor), width);
+/* EXPORT:
+ Redisplay an exposed area of frame F. X and Y are the upper-left
+ corner of the exposed rectangle. W and H are width and height of
+ the exposed area. All are pixel values. W or H zero means redraw
+ the entire frame. */
- /* Then see if frame has specified a specific blink off cursor type. */
- if (FRAME_BLINK_OFF_CURSOR (f) != DEFAULT_CURSOR)
+void
+expose_frame (f, x, y, w, h)
+ struct frame *f;
+ int x, y, w, h;
+{
+ XRectangle r;
+ int mouse_face_overwritten_p = 0;
+
+ TRACE ((stderr, "expose_frame "));
+
+ /* No need to redraw if frame will be redrawn soon. */
+ if (FRAME_GARBAGED_P (f))
{
- *width = FRAME_BLINK_OFF_CURSOR_WIDTH (f);
- return FRAME_BLINK_OFF_CURSOR (f);
+ TRACE ((stderr, " garbaged\n"));
+ return;
}
- /* Finally perform built-in cursor blinking:
- filled box <-> hollow box
- wide [h]bar <-> narrow [h]bar
- narrow [h]bar <-> no cursor
- other type <-> no cursor */
+#ifdef HAVE_CARBON
+ /* MAC_TODO: this is a kludge, but if scroll bars are not activated
+ or deactivated here, for unknown reasons, activated scroll bars
+ are shown in deactivated frames in some instances. */
+ if (f == FRAME_MAC_DISPLAY_INFO (f)->x_focus_frame)
+ activate_scroll_bars (f);
+ else
+ deactivate_scroll_bars (f);
+#endif
- if (cursor_type == FILLED_BOX_CURSOR)
- return HOLLOW_BOX_CURSOR;
+ /* If basic faces haven't been realized yet, there is no point in
+ trying to redraw anything. This can happen when we get an expose
+ event while Emacs is starting, e.g. by moving another window. */
+ if (FRAME_FACE_CACHE (f) == NULL
+ || FRAME_FACE_CACHE (f)->used < BASIC_FACE_ID_SENTINEL)
+ {
+ TRACE ((stderr, " no faces\n"));
+ return;
+ }
- if ((cursor_type == BAR_CURSOR || cursor_type == HBAR_CURSOR) && *width > 1)
+ if (w == 0 || h == 0)
{
- *width = 1;
- return cursor_type;
+ r.x = r.y = 0;
+ r.width = CANON_X_UNIT (f) * f->width;
+ r.height = CANON_Y_UNIT (f) * f->height;
+ }
+ else
+ {
+ r.x = x;
+ r.y = y;
+ r.width = w;
+ r.height = h;
}
- return NO_CURSOR;
+ TRACE ((stderr, "(%d, %d, %d, %d)\n", r.x, r.y, r.width, r.height));
+ mouse_face_overwritten_p = expose_window_tree (XWINDOW (f->root_window), &r);
+
+ if (WINDOWP (f->tool_bar_window))
+ mouse_face_overwritten_p
+ |= expose_window (XWINDOW (f->tool_bar_window), &r);
+
+#ifdef HAVE_X_WINDOWS
+#ifndef MSDOS
+#ifndef USE_X_TOOLKIT
+ if (WINDOWP (f->menu_bar_window))
+ mouse_face_overwritten_p
+ |= expose_window (XWINDOW (f->menu_bar_window), &r);
+#endif /* not USE_X_TOOLKIT */
+#endif
+#endif
+
+ /* Some window managers support a focus-follows-mouse style with
+ delayed raising of frames. Imagine a partially obscured frame,
+ and moving the mouse into partially obscured mouse-face on that
+ frame. The visible part of the mouse-face will be highlighted,
+ then the WM raises the obscured frame. With at least one WM, KDE
+ 2.1, Emacs is not getting any event for the raising of the frame
+ (even tried with SubstructureRedirectMask), only Expose events.
+ These expose events will draw text normally, i.e. not
+ highlighted. Which means we must redo the highlight here.
+ Subsume it under ``we love X''. --gerd 2001-08-15 */
+ /* Included in Windows version because Windows most likely does not
+ do the right thing if any third party tool offers
+ focus-follows-mouse with delayed raise. --jason 2001-10-12 */
+ if (mouse_face_overwritten_p && !FRAME_GARBAGED_P (f))
+ {
+ Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
+ if (f == dpyinfo->mouse_face_mouse_frame)
+ {
+ int x = dpyinfo->mouse_face_mouse_x;
+ int y = dpyinfo->mouse_face_mouse_y;
+ clear_mouse_face (dpyinfo);
+ note_mouse_highlight (f, x, y);
+ }
+ }
}
-/* Notice when the text cursor of window W has been completely
- overwritten by a drawing operation that outputs glyphs in AREA
- starting at X0 and ending at X1 in the line starting at Y0 and
- ending at Y1. X coordinates are area-relative. X1 < 0 means all
- the rest of the line after X0 has been written. Y coordinates
- are window-relative. */
+/* EXPORT:
+ Determine the intersection of two rectangles R1 and R2. Return
+ the intersection in *RESULT. Value is non-zero if RESULT is not
+ empty. */
-void
-notice_overwritten_cursor (w, area, x0, x1, y0, y1)
- struct window *w;
- enum glyph_row_area area;
- int x0, y0, x1, y1;
+int
+x_intersect_rectangles (r1, r2, result)
+ XRectangle *r1, *r2, *result;
{
-#ifdef HAVE_CARBON
- /* ++KFS: Why is there a special version of this for the mac ? */
- if (area == TEXT_AREA
- && w->phys_cursor_on_p
- && y0 <= w->phys_cursor.y
- && y1 >= w->phys_cursor.y + w->phys_cursor_height
- && x0 <= w->phys_cursor.x
- && (x1 < 0 || x1 > w->phys_cursor.x))
- w->phys_cursor_on_p = 0;
-#else
- if (area == TEXT_AREA && w->phys_cursor_on_p)
+ XRectangle *left, *right;
+ XRectangle *upper, *lower;
+ int intersection_p = 0;
+
+ /* Rearrange so that R1 is the left-most rectangle. */
+ if (r1->x < r2->x)
+ left = r1, right = r2;
+ else
+ left = r2, right = r1;
+
+ /* X0 of the intersection is right.x0, if this is inside R1,
+ otherwise there is no intersection. */
+ if (right->x <= left->x + left->width)
{
- int cx0 = w->phys_cursor.x;
- int cx1 = cx0 + w->phys_cursor_width;
- int cy0 = w->phys_cursor.y;
- int cy1 = cy0 + w->phys_cursor_height;
+ result->x = right->x;
- if (x0 <= cx0 && (x1 < 0 || x1 >= cx1))
- {
- /* The cursor image will be completely removed from the
- screen if the output area intersects the cursor area in
- y-direction. When we draw in [y0 y1[, and some part of
- the cursor is at y < y0, that part must have been drawn
- before. When scrolling, the cursor is erased before
- actually scrolling, so we don't come here. When not
- scrolling, the rows above the old cursor row must have
- changed, and in this case these rows must have written
- over the cursor image.
+ /* The right end of the intersection is the minimum of the
+ the right ends of left and right. */
+ result->width = (min (left->x + left->width, right->x + right->width)
+ - result->x);
- Likewise if part of the cursor is below y1, with the
- exception of the cursor being in the first blank row at
- the buffer and window end because update_text_area
- doesn't draw that row. (Except when it does, but
- that's handled in update_text_area.) */
+ /* Same game for Y. */
+ if (r1->y < r2->y)
+ upper = r1, lower = r2;
+ else
+ upper = r2, lower = r1;
- if (((y0 >= cy0 && y0 < cy1) || (y1 > cy0 && y1 < cy1))
- && w->current_matrix->rows[w->phys_cursor.vpos].displays_text_p)
- w->phys_cursor_on_p = 0;
+ /* The upper end of the intersection is lower.y0, if this is inside
+ of upper. Otherwise, there is no intersection. */
+ if (lower->y <= upper->y + upper->height)
+ {
+ result->y = lower->y;
+
+ /* The lower end of the intersection is the minimum of the lower
+ ends of upper and lower. */
+ result->height = (min (lower->y + lower->height,
+ upper->y + upper->height)
+ - result->y);
+ intersection_p = 1;
}
}
-#endif
+
+ return intersection_p;
}
+#endif /* HAVE_WINDOW_SYSTEM */
+
\f
/***********************************************************************
Initialization
mode_line_string_list = Qnil;
staticpro (&mode_line_string_list);
+ help_echo_string = Qnil;
+ staticpro (&help_echo_string);
+ help_echo_object = Qnil;
+ staticpro (&help_echo_object);
+ help_echo_window = Qnil;
+ staticpro (&help_echo_window);
+ previous_help_echo_string = Qnil;
+ staticpro (&previous_help_echo_string);
+ help_echo_pos = -1;
+
+#ifdef HAVE_WINDOW_SYSTEM
+ DEFVAR_BOOL ("x-stretch-cursor", &x_stretch_cursor_p,
+ doc: /* *Non-nil means draw block cursor as wide as the glyph under it.
+For example, if a block cursor is over a tab, it will be drawn as
+wide as that tab on the display. */);
+ x_stretch_cursor_p = 0;
+#endif
+
DEFVAR_LISP ("show-trailing-whitespace", &Vshow_trailing_whitespace,
doc: /* Non-nil means highlight trailing whitespace.
The face used for trailing whitespace is `trailing-whitespace'. */);
is not valid when these functions are called. */);
Vwindow_scroll_functions = Qnil;
+ DEFVAR_BOOL ("mouse-autoselect-window", &mouse_autoselect_window,
+ doc: /* *Non-nil means autoselect window with mouse pointer. */);
+ mouse_autoselect_window = 0;
+
DEFVAR_BOOL ("auto-resize-tool-bars", &auto_resize_tool_bars_p,
doc: /* *Non-nil means automatically resize tool-bars.
This increases a tool-bar's height if not all tool-bar items are visible.
HCoop / bpt / emacs.git / commitdiff