void
draw_preview_image (gboolean recompute)
{
gint startx, starty, pw, ph;
GdkColor color;
color.red = 0x0;
color.green = 0x0;
color.blue = 0x0;
gdk_gc_set_rgb_bg_color (gc, &color);
color.red = 0xFFFF;
color.green = 0xFFFF;
color.blue = 0xFFFF;
gdk_gc_set_rgb_fg_color (gc, &color);
gdk_gc_set_function (gc, GDK_COPY);
compute_preview_rectangle (&startx, &starty, &pw, &ph);
if (recompute)
{
GdkDisplay *display = gtk_widget_get_display (previewarea);
GdkCursor *cursor;
cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
gdk_window_set_cursor (previewarea->window, cursor);
gdk_cursor_unref (cursor);
compute_preview (startx, starty, pw, ph);
cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
gdk_window_set_cursor (previewarea->window, cursor);
gdk_cursor_unref (cursor);
gdk_flush ();
/* if we recompute, clear backbuf, so we don't
* restore the wrong bitmap */
if (backbuf.image != NULL)
{
g_object_unref (backbuf.image);
backbuf.image = NULL;
}
}
gdk_draw_rgb_image (previewarea->window, gc,
0, 0, PREVIEW_WIDTH, PREVIEW_HEIGHT,
GDK_RGB_DITHER_MAX, preview_rgb_data,
3 * PREVIEW_WIDTH);
/* draw symbols if enabled in UI */
if (mapvals.interactive_preview)
{
draw_handles ();
}
}
void
draw_preview_image (gint docompute)
{
gint startx, starty, pw, ph;
GdkColor color;
color.red = 0x0;
color.green = 0x0;
color.blue = 0x0;
gdk_gc_set_rgb_bg_color (gc, &color);
color.red = 0xFFFF;
color.green = 0xFFFF;
color.blue = 0xFFFF;
gdk_gc_set_rgb_fg_color (gc, &color);
gdk_gc_set_function (gc, GDK_COPY);
linetab[0].x1 = -1;
pw = PREVIEW_WIDTH * mapvals.zoom;
ph = PREVIEW_HEIGHT * mapvals.zoom;
startx = (PREVIEW_WIDTH - pw) / 2;
starty = (PREVIEW_HEIGHT - ph) / 2;
if (docompute == TRUE)
{
GdkDisplay *display = gtk_widget_get_display (previewarea);
GdkCursor *cursor;
cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
gdk_window_set_cursor (previewarea->window, cursor);
gdk_cursor_unref (cursor);
compute_preview (0, 0, width - 1, height - 1, pw, ph);
cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
gdk_window_set_cursor(previewarea->window, cursor);
gdk_cursor_unref (cursor);
clear_light_marker ();
}
if (pw != PREVIEW_WIDTH || ph != PREVIEW_HEIGHT)
gdk_window_clear (previewarea->window);
gdk_draw_rgb_image (previewarea->window, gc,
startx, starty, pw, ph,
GDK_RGB_DITHER_MAX,
preview_rgb_data, 3 * pw);
draw_lights (startx, starty, pw, ph);
}
void
preview_compute (void)
{
GdkDisplay *display = gtk_widget_get_display (previewarea);
GdkCursor *cursor;
gint startx, starty, pw, ph;
compute_preview_rectangle (&startx, &starty, &pw, &ph);
cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
gdk_window_set_cursor (gtk_widget_get_window (previewarea), cursor);
gdk_cursor_unref (cursor);
compute_preview (startx, starty, pw, ph);
cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
gdk_window_set_cursor (gtk_widget_get_window (previewarea), cursor);
gdk_cursor_unref (cursor);
gdk_flush ();
}