void
ddisplay_set_origo(DDisplay *ddisp, coord x, coord y)
{
Rectangle *extents = &ddisp->diagram->data->extents;
Rectangle *visible = &ddisp->visible;
int width, height;
g_return_if_fail (ddisp->renderer != NULL);
/* updaterar origo+visible+rulers */
ddisp->origo.x = x;
ddisp->origo.y = y;
if (ddisp->zoom_factor<DDISPLAY_MIN_ZOOM)
ddisp->zoom_factor = DDISPLAY_MIN_ZOOM;
if (ddisp->zoom_factor > DDISPLAY_MAX_ZOOM)
ddisp->zoom_factor = DDISPLAY_MAX_ZOOM;
width = dia_renderer_get_width_pixels (ddisp->renderer);
height = dia_renderer_get_height_pixels (ddisp->renderer);
visible->left = ddisp->origo.x;
visible->top = ddisp->origo.y;
visible->right = ddisp->origo.x + ddisplay_untransform_length(ddisp, width);
visible->bottom = ddisp->origo.y + ddisplay_untransform_length(ddisp, height);
ddisplay_update_rulers (ddisp, extents, visible);
}
void
ddisplay_untransform_coords(DDisplay *ddisp,
int xi, int yi,
coord *x, coord *y)
{
Rectangle *visible = &ddisp->visible;
int width = dia_renderer_get_width_pixels (ddisp->renderer);
int height = dia_renderer_get_height_pixels (ddisp->renderer);
*x = visible->left + xi*(visible->right - visible->left) / (real)width;
*y = visible->top + yi*(visible->bottom - visible->top) / (real)height;
}
void
ddisplay_transform_coords_double(DDisplay *ddisp,
coord x, coord y,
double *xi, double *yi)
{
Rectangle *visible = &ddisp->visible;
double width = dia_renderer_get_width_pixels (ddisp->renderer);
double height = dia_renderer_get_height_pixels (ddisp->renderer);
*xi = (x - visible->left) * (real)width / (visible->right - visible->left);
*yi = (y - visible->top) * (real)height / (visible->bottom - visible->top);
}
void
ddisplay_add_display_area(DDisplay *ddisp,
int left, int top,
int right, int bottom)
{
IRectangle *r;
if (!ddisp->renderer)
return; /* if we don't have a renderer yet prefer ignoring over crashing */
if (left < 0)
left = 0;
if (top < 0)
top = 0;
if (right > dia_renderer_get_width_pixels (ddisp->renderer))
right = dia_renderer_get_width_pixels (ddisp->renderer);
if (bottom > dia_renderer_get_height_pixels (ddisp->renderer))
bottom = dia_renderer_get_height_pixels (ddisp->renderer);
/* draw some rectangles to show where updates are...*/
/*
gdk_draw_rectangle(gtk_widget_get_window(ddisp->canvas),
gtk_widget_get_style(ddisp->canvas)->black_gc, TRUE,
left, top, right-left,bottom-top);
*/
/* Temporarily just do a union of all Irectangles: */
if (ddisp->display_areas==NULL) {
r = g_new(IRectangle,1);
r->top = top; r->bottom = bottom;
r->left = left; r->right = right;
ddisp->display_areas = g_slist_prepend(ddisp->display_areas, r);
} else {
r = (IRectangle *) ddisp->display_areas->data;
r->top = MIN( r->top, top );
r->bottom = MAX( r->bottom, bottom );
r->left = MIN( r->left, left );
r->right = MAX( r->right, right );
}
}
void
ddisplay_transform_coords(DDisplay *ddisp,
coord x, coord y,
int *xi, int *yi)
{
Rectangle *visible = &ddisp->visible;
int width = dia_renderer_get_width_pixels (ddisp->renderer);
int height = dia_renderer_get_height_pixels (ddisp->renderer);
*xi = ROUND ( (x - visible->left) * (real)width /
(visible->right - visible->left) );
*yi = ROUND ( (y - visible->top) * (real)height /
(visible->bottom - visible->top) );
}
void
pagebreak_draw(DDisplay *ddisp, Rectangle *update)
{
DiaRenderer *renderer = ddisp->renderer;
DiaInteractiveRendererInterface *irenderer;
int width = dia_renderer_get_width_pixels(ddisp->renderer);
int height = dia_renderer_get_height_pixels(ddisp->renderer);
irenderer = DIA_GET_INTERACTIVE_RENDERER_INTERFACE (renderer);
if (prefs.pagebreak.visible) {
Diagram *dia = ddisp->diagram;
real origx = 0, origy = 0, pos;
real pwidth = dia->data->paper.width;
real pheight = dia->data->paper.height;
int x,y;
DIA_RENDERER_GET_CLASS(renderer)->set_linewidth(renderer, 0.0);
if (prefs.pagebreak.solid)
DIA_RENDERER_GET_CLASS(renderer)->set_linestyle(renderer, LINESTYLE_SOLID, 0.0);
else
DIA_RENDERER_GET_CLASS(renderer)->set_linestyle(renderer, LINESTYLE_DOTTED,
ddisplay_untransform_length(ddisp, 31));
if (dia->data->paper.fitto) {
origx = dia->data->extents.left;
origy = dia->data->extents.top;
}
/* vertical lines ... */
pos = origx + ceil((update->left - origx) / pwidth) * pwidth;
while (pos <= update->right) {
ddisplay_transform_coords(ddisp, pos,0,&x,&y);
irenderer->draw_pixel_line(renderer,
x, 0, x, height,
&dia->pagebreak_color);
pos += pwidth;
}
/* Horizontal lines: */
pos = origy + ceil((update->top - origy) / pheight) * pheight;
while (pos <= update->bottom) {
ddisplay_transform_coords(ddisp, 0,pos,&x,&y);
irenderer->draw_pixel_line(renderer,
0, y, width, y,
&dia->pagebreak_color);
pos += pheight;
}
}
}
void
ddisplay_show_all (DDisplay *ddisp)
{
Diagram *dia;
real magnify_x, magnify_y;
int width, height;
Point middle;
g_return_if_fail (ddisp != NULL);
dia = ddisp->diagram;
width = dia_renderer_get_width_pixels (ddisp->renderer);
height = dia_renderer_get_height_pixels (ddisp->renderer);
/* if there is something selected show that instead of all exisiting objects */
if (dia->data->selected) {
GList *list = dia->data->selected;
Rectangle extents = *dia_object_get_enclosing_box ((DiaObject*)list->data);
list = g_list_next(list);
while (list) {
DiaObject *obj = (DiaObject *)list->data;
rectangle_union(&extents, dia_object_get_enclosing_box (obj));
list = g_list_next(list);
}
magnify_x = (real)width / (extents.right - extents.left) / ddisp->zoom_factor;
magnify_y = (real)height / (extents.bottom - extents.top) / ddisp->zoom_factor;
middle.x = extents.left + (extents.right - extents.left) / 2.0;
middle.y = extents.top + (extents.bottom - extents.top) / 2.0;
} else {
magnify_x = (real)width /
(dia->data->extents.right - dia->data->extents.left) / ddisp->zoom_factor;
magnify_y = (real)height /
(dia->data->extents.bottom - dia->data->extents.top) / ddisp->zoom_factor;
middle.x = dia->data->extents.left +
(dia->data->extents.right - dia->data->extents.left) / 2.0;
middle.y = dia->data->extents.top +
(dia->data->extents.bottom - dia->data->extents.top) / 2.0;
}
ddisplay_zoom (ddisp, &middle,
((magnify_x<magnify_y)?magnify_x:magnify_y)/1.05);
ddisplay_update_scrollbars(ddisp);
ddisplay_add_update_all(ddisp);
ddisplay_flush(ddisp);
}
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);
}