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medit/moo/mooterm/mootermdraw.c

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/*
* mooterm/mootermdraw.c
*
* Copyright (C) 2004-2005 by Yevgen Muntyan <muntyan@math.tamu.edu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* See COPYING file that comes with this distribution.
*/
#define MOOTERM_COMPILATION
#include "mooterm/mooterm-private.h"
#include "mooterm/mootermbuffer-private.h"
#include <string.h>
#define CHARS \
"`1234567890-=~!@#$%^&*()_+qwertyuiop[]\\QWERTYUIOP"\
"{}|asdfghjkl;'ASDFGHJKL:\"zxcvbnm,./ZXCVBNM<>?"
#define HOW_MANY(x, y) (((x) + (y) - 1) / (y))
static gboolean process_updates (MooTerm *term)
{
gdk_window_process_updates (GTK_WIDGET(term)->window, FALSE);
term->priv->pending_expose = 0;
return FALSE;
}
static void add_update_timeout (MooTerm *term)
{
if (!term->priv->pending_expose)
{
term->priv->pending_expose =
g_timeout_add_full (EXPOSE_PRIORITY,
EXPOSE_TIMEOUT,
(GSourceFunc) process_updates,
term,
NULL);
}
}
static void remove_update_timeout (MooTerm *term)
{
if (term->priv->pending_expose)
g_source_remove (term->priv->pending_expose);
term->priv->pending_expose = 0;
}
void moo_term_init_font_stuff (MooTerm *term)
{
PangoContext *ctx;
PangoFontDescription *font;
if (term->priv->font_info)
term_font_info_free (term->priv->font_info);
ctx = gtk_widget_create_pango_context (GTK_WIDGET (term));
g_return_if_fail (ctx != NULL);
font = pango_font_description_from_string (DEFAULT_MONOSPACE_FONT);
if (!font)
font = pango_font_description_from_string (DEFAULT_MONOSPACE_FONT2);
if (font)
{
pango_context_set_font_description (ctx, font);
pango_font_description_free (font);
}
term->priv->font_info = term_font_info_new (ctx);
term->priv->layout = pango_layout_new (ctx);
g_object_unref (ctx);
}
void term_font_info_calculate (TermFontInfo *info)
{
PangoRectangle logical;
PangoLayout *layout;
PangoLayoutIter *iter;
g_assert (info->ctx != NULL);
layout = pango_layout_new (info->ctx);
pango_layout_set_text (layout, CHARS, strlen(CHARS));
pango_layout_get_extents (layout, NULL, &logical);
info->width = HOW_MANY (logical.width, strlen (CHARS));
info->width = PANGO_PIXELS (info->width);
iter = pango_layout_get_iter (layout);
info->height = PANGO_PIXELS (logical.height);
info->ascent = PANGO_PIXELS (pango_layout_iter_get_baseline (iter));
pango_layout_iter_free (iter);
g_object_unref (layout);
}
void term_font_info_set_font (TermFontInfo *info,
PangoFontDescription *font_desc)
{
g_return_if_fail (font_desc != NULL);
pango_context_set_font_description (info->ctx, font_desc);
term_font_info_calculate (info);
}
TermFontInfo *term_font_info_new (PangoContext *ctx)
{
TermFontInfo *info = g_new0 (TermFontInfo, 1);
info->ctx = ctx;
g_object_ref (ctx);
term_font_info_calculate (info);
return info;
}
void term_font_info_free (TermFontInfo *info)
{
if (info)
{
g_object_unref (info->ctx);
g_free (info);
}
}
void moo_term_invalidate_rect (MooTerm *term,
GdkRectangle *rect)
{
GdkRectangle r = {
rect->x * term->priv->font_info->width,
rect->y * term->priv->font_info->height,
rect->width * term->priv->font_info->width,
rect->height * term->priv->font_info->height
};
gdk_window_invalidate_rect (GTK_WIDGET(term)->window,
&r, FALSE);
add_update_timeout (term);
}
void moo_term_setup_palette (MooTerm *term)
{
int i;
GtkWidget *widget = GTK_WIDGET (term);
GdkColormap *colormap;
GdkGCValues vals;
GdkColor colors[MOO_TERM_COLOR_MAX];
g_assert (GTK_WIDGET_REALIZED (widget));
for (i = 0; i < 3; ++i)
{
term->priv->fg[i][MOO_TERM_COLOR_MAX] =
gdk_gc_new_with_values (widget->window, &vals, 0);
term->priv->bg[i][MOO_TERM_COLOR_MAX] =
gdk_gc_new_with_values (widget->window, &vals, 0);
}
gdk_gc_set_foreground (term->priv->fg[NORMAL][MOO_TERM_COLOR_MAX],
&(widget->style->black));
gdk_gc_set_background (term->priv->fg[NORMAL][MOO_TERM_COLOR_MAX],
&(widget->style->white));
gdk_gc_set_foreground (term->priv->fg[SELECTED][MOO_TERM_COLOR_MAX],
&(widget->style->white));
gdk_gc_set_background (term->priv->fg[SELECTED][MOO_TERM_COLOR_MAX],
&(widget->style->black));
gdk_gc_set_foreground (term->priv->fg[CURSOR][MOO_TERM_COLOR_MAX],
&(widget->style->white));
gdk_gc_set_background (term->priv->fg[CURSOR][MOO_TERM_COLOR_MAX],
&(widget->style->black));
gdk_gc_set_foreground (term->priv->bg[NORMAL][MOO_TERM_COLOR_MAX],
&(widget->style->white));
gdk_gc_set_background (term->priv->bg[NORMAL][MOO_TERM_COLOR_MAX],
&(widget->style->black));
gdk_gc_set_foreground (term->priv->bg[SELECTED][MOO_TERM_COLOR_MAX],
&(widget->style->black));
gdk_gc_set_background (term->priv->bg[SELECTED][MOO_TERM_COLOR_MAX],
&(widget->style->white));
gdk_gc_set_foreground (term->priv->bg[CURSOR][MOO_TERM_COLOR_MAX],
&(widget->style->black));
gdk_gc_set_background (term->priv->bg[CURSOR][MOO_TERM_COLOR_MAX],
&(widget->style->white));
gdk_window_set_background (widget->window, &(widget->style->white));
colormap = gdk_colormap_get_system ();
g_return_if_fail (colormap != NULL);
gdk_color_parse ("black", &colors[MOO_TERM_BLACK]);
gdk_color_parse ("red", &colors[MOO_TERM_RED]);
gdk_color_parse ("green", &colors[MOO_TERM_GREEN]);
gdk_color_parse ("yellow", &colors[MOO_TERM_YELLOW]);
gdk_color_parse ("blue", &colors[MOO_TERM_BLUE]);
gdk_color_parse ("magenta", &colors[MOO_TERM_MAGENTA]);
gdk_color_parse ("cyan", &colors[MOO_TERM_CYAN]);
gdk_color_parse ("white", &colors[MOO_TERM_WHITE]);
for (i = 0; i < MOO_TERM_COLOR_MAX; ++i)
gdk_colormap_alloc_color (colormap, &colors[i], TRUE, TRUE);
for (i = 0; i < MOO_TERM_COLOR_MAX; ++i)
{
vals.foreground = colors[i];
vals.background = colors[i];
term->priv->fg[NORMAL][i] =
gdk_gc_new_with_values (widget->window,
&vals,
GDK_GC_FOREGROUND | GDK_GC_BACKGROUND);
term->priv->bg[NORMAL][i] =
gdk_gc_new_with_values (widget->window,
&vals,
GDK_GC_FOREGROUND | GDK_GC_BACKGROUND);
}
}
void moo_term_cursor_moved (MooTerm *term,
MooTermBuffer *buf)
{
int scrollback, top_line, new_row, new_col;
guint char_width, char_height;
GdkRegion *dirty;
GdkRectangle rect = {0, 0, 0, 0};
GdkRectangle small_rect = {0, 0, 1, 1};
if (buf != term->priv->buffer || !term->priv->cursor_visible)
return;
scrollback = buf_scrollback (buf);
top_line = term_top_line (term);
new_row = buf_cursor_row (buf);
new_col = buf_cursor_col (buf);
char_width = term->priv->font_info->width;
char_height = term->priv->font_info->height;
rect.width = char_width;
rect.height = char_height;
rect.x = term->priv->cursor_col * char_width;
rect.y = (term->priv->cursor_row + scrollback - top_line) * char_height;
small_rect.x = term->priv->cursor_col;
small_rect.y = term->priv->cursor_row + scrollback - top_line;
moo_term_invalidate_content_rect (term, &small_rect);
dirty = gdk_region_rectangle (&rect);
if (new_row != (int) term->priv->cursor_row ||
new_col != (int) term->priv->cursor_col)
{
rect.x = new_col * char_width;
rect.y = (new_row + scrollback - top_line) * char_height;
gdk_region_union_with_rect (dirty, &rect);
small_rect.x = new_col;
small_rect.y = new_row + scrollback - top_line;
moo_term_invalidate_content_rect (term, &small_rect);
}
term->priv->cursor_col = new_col;
term->priv->cursor_row = new_row;
gdk_window_invalidate_region (GTK_WIDGET(term)->window,
dirty, FALSE);
add_update_timeout (term);
gdk_region_destroy (dirty);
}
void moo_term_init_back_pixmap (MooTerm *term)
{
if (term->priv->back_pixmap)
return;
term->priv->back_pixmap =
gdk_pixmap_new (GTK_WIDGET(term)->window,
term->priv->font_info->width * term->priv->width,
term->priv->font_info->height * term->priv->height,
-1);
term->priv->clip = gdk_gc_new (term->priv->back_pixmap);
gdk_gc_set_clip_origin (term->priv->clip, 0, 0);
moo_term_invalidate_content_all (term);
}
void moo_term_resize_back_pixmap (MooTerm *term)
{
if (term->priv->font_changed)
{
GdkPixmap *pix;
term->priv->font_changed = FALSE;
pix = gdk_pixmap_new (term->priv->back_pixmap,
term->priv->font_info->width * term->priv->width,
term->priv->font_info->height * term->priv->height,
-1);
g_object_unref (term->priv->back_pixmap);
term->priv->back_pixmap = pix;
moo_term_invalidate_content_all (term);
}
else
{
GdkPixmap *pix;
GdkRegion *region;
guint char_width = term->priv->font_info->width;
guint char_height = term->priv->font_info->height;
int old_width, old_height;
int width = char_width * term->priv->width;
int height = char_height * term->priv->height;
GdkRectangle rec = {0, 0, width, height};
pix = gdk_pixmap_new (term->priv->back_pixmap,
width, height, -1);
gdk_drawable_get_size (term->priv->back_pixmap,
&old_width, &old_height);
gdk_gc_set_clip_rectangle (term->priv->clip, &rec);
gdk_draw_drawable (pix, term->priv->clip,
term->priv->back_pixmap,
0, 0, 0, 0,
MIN (width, old_width),
MIN (height, old_height));
if (width > old_width)
{
rec.x = old_width / char_width;
rec.width = (width - old_width) / char_width;
rec.y = 0;
rec.height = height / char_height;
moo_term_invalidate_content_rect (term, &rec);
}
if (height > old_height)
{
rec.x = 0;
rec.width = width / char_width;
rec.y = old_height / char_height;
rec.height = (height - old_height) / char_height;
moo_term_invalidate_content_rect (term, &rec);
}
rec.x = rec.y = 0;
rec.width = width / char_width;
rec.height = height / char_height;
if (term->priv->changed_content)
{
region = gdk_region_rectangle (&rec);
gdk_region_intersect (term->priv->changed_content, region);
gdk_region_destroy (region);
}
g_object_unref (term->priv->back_pixmap);
term->priv->back_pixmap = pix;
}
}
/* absolute row */
static void term_draw_range (MooTerm *term,
guint row,
guint start,
guint len);
void moo_term_update_back_pixmap (MooTerm *term)
{
GdkRectangle *rects = NULL;
int n_rects;
int i, j;
int top_line = term_top_line (term);
int width = term->priv->width;
int height = term->priv->height;
GdkRectangle clip = {0, 0, width, height};
if (!term->priv->changed_content)
return;
gdk_region_get_rectangles (term->priv->changed_content,
&rects, &n_rects);
for (i = 0; i < n_rects; ++i)
{
if (gdk_rectangle_intersect (&rects[i], &clip, &rects[i]))
{
for (j = 0; j < rects[i].height; ++j)
term_draw_range (term, top_line + rects[i].y + j,
rects[i].x, rects[i].width);
}
}
g_free (rects);
gdk_region_destroy (term->priv->changed_content);
term->priv->changed_content = NULL;
}
void moo_term_invalidate_content_all (MooTerm *term)
{
GdkRectangle rect = {0, 0, term->priv->width, term->priv->height};
moo_term_invalidate_content_rect (term, &rect);
}
void moo_term_invalidate_content_rect(MooTerm *term,
GdkRectangle *rect)
{
if (term->priv->changed_content)
gdk_region_union_with_rect (term->priv->changed_content, rect);
else
term->priv->changed_content = gdk_region_rectangle (rect);
}
gboolean moo_term_expose_event (GtkWidget *widget,
GdkEventExpose *event)
{
GdkRectangle text_rec = {0, 0, 0, 0};
GdkRegion *text_reg;
MooTerm *term = MOO_TERM (widget);
guint char_width = term->priv->font_info->width;
guint char_height = term->priv->font_info->height;
g_assert (term_top_line (term) <= buf_scrollback (term->priv->buffer));
remove_update_timeout (term);
text_rec.width = term->priv->width * char_width;
text_rec.height = term->priv->height * char_height;
if (event->area.x + event->area.width >= text_rec.width)
{
gdk_draw_rectangle (widget->window,
term->priv->bg[NORMAL][MOO_TERM_COLOR_MAX], TRUE,
text_rec.width, 0,
char_width,
widget->allocation.height);
}
if (event->area.y + event->area.height >= text_rec.height)
{
gdk_draw_rectangle (widget->window,
term->priv->bg[NORMAL][MOO_TERM_COLOR_MAX], TRUE,
0, text_rec.height,
widget->allocation.width,
char_height);
}
text_reg = gdk_region_rectangle (&text_rec);
gdk_region_intersect (event->region, text_reg);
gdk_region_destroy (text_reg);
if (!gdk_region_empty (event->region))
{
moo_term_update_back_pixmap (term);
gdk_gc_set_clip_region (term->priv->clip,
event->region);
gdk_draw_drawable (event->window,
term->priv->clip,
term->priv->back_pixmap,
0, 0, 0, 0,
text_rec.width,
text_rec.height);
}
return TRUE;
}
/****************************************************************************/
/* Drawing
*/
static void term_draw_range_simple (MooTerm *term,
guint abs_row,
guint start,
guint len,
int selected);
static void term_draw_cells (MooTerm *term,
guint abs_row,
guint start,
guint len,
MooTermTextAttr *attr,
int selected);
static void term_draw_caret (MooTerm *term);
static void term_draw_range (MooTerm *term,
guint abs_row,
guint start,
guint len)
{
TermSelection *sel = term->priv->selection;
int selected;
guint first = start;
guint last = start + len;
g_return_if_fail (len != 0);
g_assert (start + len <= term->priv->width);
g_assert (abs_row < buf_total_height (term->priv->buffer));
if (term->priv->cursor_visible &&
buf_cursor_row_abs (term->priv->buffer) == abs_row)
{
guint cursor = buf_cursor_col (term->priv->buffer);
if (cursor >= start && cursor < start + len)
{
if (cursor > start)
term_draw_range (term, abs_row,
start, cursor - start);
term_draw_caret (term);
if (cursor < start + len - 1)
term_draw_range (term, abs_row,
cursor + 1, start + len - 1 - cursor);
return;
}
}
selected = term_selection_row_selected (sel, abs_row);
switch (selected)
{
case FULL_SELECTED:
case NOT_SELECTED:
term_draw_range_simple (term, abs_row, first, last, selected);
break;
case PART_SELECTED:
{
guint l_row = sel->l_row;
guint l_col = sel->l_col;
guint r_row = sel->r_row;
guint r_col = sel->r_col;
if (l_row == r_row)
{
g_assert (abs_row == l_row);
if (r_col <= first || last <= l_col)
{
term_draw_range_simple (term, abs_row,
first, last, FALSE);
}
else if (l_col <= first && last <= r_col)
{
term_draw_range_simple (term, abs_row,
first, last, TRUE);
}
else if (first < l_col)
{
term_draw_range_simple (term, abs_row,
first, l_col, FALSE);
term_draw_range_simple (term, abs_row, l_col,
MIN (last, r_col), TRUE);
if (r_col < last)
term_draw_range_simple (term, abs_row,
r_col, last, FALSE);
}
else
{
term_draw_range_simple (term, abs_row, first,
MIN (last, r_col), TRUE);
if (r_col < last)
term_draw_range_simple (term, abs_row,
r_col, last, FALSE);
}
}
else if (l_row == abs_row)
{
if (last <= l_col)
{
term_draw_range_simple (term, abs_row,
first, last, FALSE);
}
else if (l_col <= first)
{
term_draw_range_simple (term, abs_row,
first, last, TRUE);
}
else
{
term_draw_range_simple (term, abs_row,
first, l_col, FALSE);
term_draw_range_simple (term, abs_row,
l_col, last, TRUE);
}
}
else
{
g_assert (abs_row == r_row);
if (last <= r_col)
{
term_draw_range_simple (term, abs_row,
first, last, TRUE);
}
else if (r_col <= first)
{
term_draw_range_simple (term, abs_row,
first, last, FALSE);
}
else {
term_draw_range_simple (term, abs_row,
first, r_col, TRUE);
term_draw_range_simple (term, abs_row,
r_col, last, FALSE);
}
}
break;
}
default:
g_assert_not_reached ();
}
}
static void term_draw_range_simple (MooTerm *term,
guint abs_row,
guint start,
guint len,
gboolean selected)
{
MooTermLine *line = buf_line (term->priv->buffer, abs_row);
guint char_width = term->priv->font_info->width;
guint char_height = term->priv->font_info->height;
int y = (abs_row - term_top_line (term)) * char_height;
g_assert (selected == 0 || selected == 1);
if (start >= line->len)
{
gdk_draw_rectangle (term->priv->back_pixmap,
term->priv->bg[selected][MOO_TERM_COLOR_MAX],
TRUE,
start * char_width,
y,
len * char_width,
char_height);
return;
}
else if (start + len > line->len)
{
gdk_draw_rectangle (term->priv->back_pixmap,
term->priv->bg[selected][MOO_TERM_COLOR_MAX],
TRUE,
line->len * char_width,
y,
(start + len - line->len) * char_width,
char_height);
len = line->len - start;
}
g_assert (start + len <= line->len);
while (len)
{
guint i;
MooTermTextAttr *attr = &line->data[start].attr;
for (i = 1; i < len && !attr_cmp (attr, &line->data[start + i].attr); ++i) ;
term_draw_cells (term, abs_row, start, i, attr, selected);
len -= i;
start += i;
}
}
static void term_draw_cells (MooTerm *term,
guint abs_row,
guint start,
guint len,
MooTermTextAttr *attr,
gboolean selected)
{
static char buf[8 * MAX_TERMINAL_WIDTH];
guint buf_len;
GdkGC *fg = NULL;
GdkGC *bg = NULL;
MooTermLine *line = buf_line (term->priv->buffer, abs_row);
g_assert (len != 0);
g_assert (start + len <= line->len);
buf_len = term_line_get_chars (line, buf, start, len);
g_return_if_fail (buf_len != 0);
pango_layout_set_text (term->priv->layout, buf, buf_len);
if (attr->mask & MOO_TERM_TEXT_FOREGROUND)
{
g_assert (attr->foreground < MOO_TERM_COLOR_MAX);
fg = term->priv->fg[selected][attr->foreground];
}
if (attr->mask & MOO_TERM_TEXT_BACKGROUND)
{
g_assert (attr->background < MOO_TERM_COLOR_MAX);
bg = term->priv->bg[selected][attr->background];
}
if (!fg)
fg = term->priv->fg[selected][MOO_TERM_COLOR_MAX];
if (!bg)
bg = term->priv->bg[selected][MOO_TERM_COLOR_MAX];
gdk_draw_rectangle (term->priv->back_pixmap,
bg,
TRUE,
start * term->priv->font_info->width,
(abs_row - term_top_line (term)) * term->priv->font_info->height,
len * term->priv->font_info->width,
term->priv->font_info->height);
gdk_draw_layout (term->priv->back_pixmap,
fg,
start * term->priv->font_info->width,
(abs_row - term_top_line (term)) * term->priv->font_info->height,
term->priv->layout);
if (attr->mask & MOO_TERM_TEXT_BOLD)
gdk_draw_layout (term->priv->back_pixmap,
fg,
start * term->priv->font_info->width + 1,
(abs_row - term_top_line (term)) * term->priv->font_info->height,
term->priv->layout);
if (attr->mask & MOO_TERM_TEXT_UNDERLINE)
gdk_draw_line (term->priv->back_pixmap,
fg,
start * term->priv->font_info->width,
(abs_row - term_top_line (term)) * term->priv->font_info->height + term->priv->font_info->ascent + 1,
(start + len) * term->priv->font_info->width + 1,
(abs_row - term_top_line (term)) * term->priv->font_info->height + term->priv->font_info->ascent + 1);
}
static void term_draw_caret (MooTerm *term)
{
guint screen_width = term->priv->width;
guint abs_row = buf_cursor_row_abs (term->priv->buffer);
guint col = buf_cursor_col (term->priv->buffer);
MooTermLine *line = buf_line (term->priv->buffer, abs_row);
TermSelection *sel = term->priv->selection;
char ch[6];
guint ch_len;
int screen_row = abs_row - term_top_line (term);
guint char_width = term->priv->font_info->width;
guint char_height = term->priv->font_info->height;
g_assert (col < screen_width);
if (col < term_line_len (line))
{
ch_len = g_unichar_to_utf8 (line->data[col].ch, ch);
}
else
{
ch[0] = EMPTY_CHAR;
ch_len = 1;
}
pango_layout_set_text (term->priv->layout, ch, ch_len);
switch (term->priv->caret_shape)
{
case CARET_BLOCK:
if (!term_selected (sel, abs_row, col))
{
gdk_draw_rectangle (term->priv->back_pixmap,
term->priv->bg[CURSOR][MOO_TERM_COLOR_MAX],
TRUE,
col * char_width,
screen_row * char_height,
char_width,
char_height);
gdk_draw_layout (term->priv->back_pixmap,
term->priv->fg[CURSOR][MOO_TERM_COLOR_MAX],
col * char_width,
screen_row * char_height,
term->priv->layout);
}
else
{
gdk_draw_rectangle (term->priv->back_pixmap,
term->priv->bg[CURSOR][MOO_TERM_COLOR_MAX],
FALSE,
col * char_width,
screen_row * char_height,
char_width,
char_height);
gdk_draw_rectangle (term->priv->back_pixmap,
term->priv->fg[CURSOR][MOO_TERM_COLOR_MAX],
TRUE,
col * char_width,
screen_row * char_height,
char_width,
char_height);
gdk_draw_layout (term->priv->back_pixmap,
term->priv->bg[CURSOR][MOO_TERM_COLOR_MAX],
col * char_width,
screen_row * char_height,
term->priv->layout);
}
break;
case CARET_UNDERLINE:
if (!term_selected (sel, abs_row, col))
{
gdk_draw_rectangle (term->priv->back_pixmap,
term->priv->bg[NORMAL][MOO_TERM_COLOR_MAX],
TRUE,
col * char_width,
screen_row * char_height,
char_width,
char_height);
gdk_draw_layout (term->priv->back_pixmap,
term->priv->fg[NORMAL][MOO_TERM_COLOR_MAX],
col * char_width,
screen_row * char_height,
term->priv->layout);
gdk_draw_rectangle (term->priv->back_pixmap,
term->priv->bg[CURSOR][MOO_TERM_COLOR_MAX],
TRUE,
col * char_width,
(screen_row + 1) * char_height - term->priv->caret_height,
char_width,
term->priv->caret_height);
}
else
{
gdk_draw_rectangle (term->priv->back_pixmap,
term->priv->bg[SELECTED][MOO_TERM_COLOR_MAX], TRUE,
col * char_width,
screen_row * char_height,
char_width,
char_height);
gdk_draw_layout (term->priv->back_pixmap,
term->priv->fg[SELECTED][MOO_TERM_COLOR_MAX],
col * char_width,
screen_row * char_height,
term->priv->layout);
gdk_draw_rectangle (term->priv->back_pixmap,
term->priv->fg[CURSOR][MOO_TERM_COLOR_MAX],
TRUE,
col * char_width,
(screen_row + 1) * char_height - term->priv->caret_height,
char_width,
term->priv->caret_height);
}
break;
}
}
void moo_term_buf_content_changed(MooTerm *term,
MooTermBuffer *buf)
{
GdkRectangle *rect = NULL;
GdkRegion *dirty;
int n_rect, i;
guint top_line, scrollback;
int height;
GdkRegion *changed = buf_get_changed (buf);
if (buf != term->priv->buffer || !changed || gdk_region_empty (changed))
return;
top_line = term_top_line (term);
scrollback = buf_scrollback (buf);
height = term->priv->height;
changed = gdk_region_copy (changed);
g_assert (top_line <= scrollback);
if (top_line != scrollback)
{
GdkRectangle clip = {0, 0, term->priv->width, height};
GdkRegion *tmp;
gdk_region_offset (changed, 0, scrollback - top_line);
tmp = gdk_region_rectangle (&clip);
gdk_region_intersect (changed, tmp);
gdk_region_destroy (tmp);
}
if (gdk_region_empty (changed))
{
gdk_region_destroy (changed);
return;
}
gdk_region_get_rectangles (changed, &rect, &n_rect);
g_return_if_fail (rect != NULL);
dirty = gdk_region_new ();
for (i = 0; i < n_rect; ++i)
{
moo_term_invalidate_content_rect (term, &rect[i]);
rect[i].x *= term->priv->font_info->width;
rect[i].y *= term->priv->font_info->height;
rect[i].width *= term->priv->font_info->width;
rect[i].height *= term->priv->font_info->height;
gdk_region_union_with_rect (dirty, &rect[i]);
}
gdk_window_invalidate_region (GTK_WIDGET(term)->window,
dirty, FALSE);
add_update_timeout (term);
g_free (rect);
gdk_region_destroy (changed);
gdk_region_destroy (dirty);
}
void moo_term_force_update (MooTerm *term)
{
GdkRegion *region;
GdkWindow *window = GTK_WIDGET (term)->window;
region = gdk_window_get_update_area (window);
if (region)
{
GdkEvent *event = gdk_event_new (GDK_EXPOSE);
event->expose.window = g_object_ref (window);
event->expose.send_event = TRUE;
gdk_region_get_clipbox (region, &event->expose.area);
event->expose.region = region;
gtk_main_do_event (event);
gdk_event_free (event);
}
}
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