void
ddisplay_add_update(DDisplay *ddisp, const Rectangle *rect)
{
Rectangle *r;
int top,bottom,left,right;
Rectangle *visible;
int width, height;
if (!ddisp->renderer)
return; /* can happen at creation time of the diagram */
width = dia_renderer_get_width_pixels (ddisp->renderer);
height = dia_renderer_get_height_pixels (ddisp->renderer);
if (!rectangle_intersects(rect, &ddisp->visible))
return;
/* Temporarily just do a union of all rectangles: */
if (ddisp->update_areas==NULL) {
r = g_new(Rectangle,1);
*r = *rect;
rectangle_intersection(r, &ddisp->visible);
ddisp->update_areas = g_slist_prepend(ddisp->update_areas, r);
} else {
r = (Rectangle *) ddisp->update_areas->data;
rectangle_union(r, rect);
rectangle_intersection(r, &ddisp->visible);
}
visible = &ddisp->visible;
left = floor( (r->left - visible->left) * (real)width /
(visible->right - visible->left) ) - 1;
top = floor( (r->top - visible->top) * (real)height /
(visible->bottom - visible->top) ) - 1;
right = ceil( (r->right - visible->left) * (real)width /
(visible->right - visible->left) ) + 1;
bottom = ceil( (r->bottom - visible->top) * (real)height /
(visible->bottom - visible->top) ) + 1;
ddisplay_add_display_area(ddisp,
left, top,
right, bottom);
}
/*!
* Called when the widget's window "size, position or stacking"
* changes. Needs GDK_STRUCTURE_MASK set.
*/
static gboolean
canvas_configure_event (GtkWidget *widget,
GdkEventConfigure *cevent,
DDisplay *ddisp)
{
gboolean new_size = FALSE;
int width, height;
g_return_val_if_fail (widget == ddisp->canvas, FALSE);
if (ddisp->renderer) {
width = dia_renderer_get_width_pixels (ddisp->renderer);
height = dia_renderer_get_height_pixels (ddisp->renderer);
} else {
/* We can continue even without a renderer here because
* ddisplay_resize_canvas () does the setup for us.
*/
width = height = 0;
}
/* Only do this when size is really changing */
if (width != cevent->width || height != cevent->height) {
g_print ("Canvas size change...\n");
ddisplay_resize_canvas (ddisp, cevent->width, cevent->height);
ddisplay_update_scrollbars(ddisp);
/* on resize stop further propagation - does not help */
new_size = TRUE;
}
/* If the UI is not integrated, resizing should set the resized
* window as active. With integrated UI, there is only one window.
*/
if (is_integrated_ui () == 0)
display_set_active(ddisp);
/* continue propagation with FALSE */
return new_size;
}
void
ddisplay_render_pixmap(DDisplay *ddisp, Rectangle *update)
{
GList *list;
DiaObject *obj;
int i;
DiaInteractiveRendererInterface *renderer;
#ifdef TRACES
GTimer *timer;
#endif
if (ddisp->renderer==NULL) {
printf("ERROR! Renderer was NULL!!\n");
return;
}
renderer = DIA_GET_INTERACTIVE_RENDERER_INTERFACE (ddisp->renderer);
/* Erase background */
g_return_if_fail (renderer->fill_pixel_rect != NULL);
DIA_RENDERER_GET_CLASS(ddisp->renderer)->begin_render(ddisp->renderer, update);
if (update) {
int x0, y0, x1, y1;
ddisplay_transform_coords (ddisp, update->left, update->top, &x0, &y0);
ddisplay_transform_coords (ddisp, update->right, update->bottom, &x1, &y1);
renderer->fill_pixel_rect (ddisp->renderer,
x0, y0, x1-x0, y1-y0,
&ddisp->diagram->data->bg_color);
} else
renderer->fill_pixel_rect (ddisp->renderer,
0, 0,
dia_renderer_get_width_pixels (ddisp->renderer),
dia_renderer_get_height_pixels (ddisp->renderer),
&ddisp->diagram->data->bg_color);
/* Draw grid */
grid_draw(ddisp, update);
pagebreak_draw(ddisp, update);
#ifdef TRACES
timer = g_timer_new();
#endif
data_render(ddisp->diagram->data, ddisp->renderer, update,
ddisplay_obj_render, (gpointer) ddisp);
#ifdef TRACES
g_print ("data_render(%g%%) took %g seconds\n", ddisp->zoom_factor * 5.0, g_timer_elapsed (timer, NULL));
g_timer_destroy (timer);
#endif
/* Draw handles for all selected objects */
list = ddisp->diagram->data->selected;
while (list!=NULL) {
obj = (DiaObject *) list->data;
for (i=0;i<obj->num_handles;i++) {
handle_draw(obj->handles[i], ddisp);
}
list = g_list_next(list);
}
DIA_RENDERER_GET_CLASS(ddisp->renderer)->end_render(ddisp->renderer);
}
