#define MIN_SCALE 0.05409
#define MAX_SCALE 18.4884
-/* FIXME: temporarily setting the epsilon very high until we figure out how to
- * constrain the size of the window to a pixel width, instead of to the zoom
- * level */
-#define ZOOM_EPSILON 1e-2
-
-
struct _EvView {
GtkWidget parent_instance;
int spacing;
double scale;
- EvSizingMode sizing_mode;
+ int width;
+ int height;
};
struct _EvViewClass {
GtkBorder border;
gint width, height;
- if (! GTK_WIDGET_REALIZED (widget))
+ if (!GTK_WIDGET_REALIZED (widget))
return;
- if (! view->document) {
+ if (!view->document) {
requisition->width = 1;
requisition->height = 1;
return;
&width, &height);
ev_document_misc_get_page_border_size (width, height, &border);
- switch (view->sizing_mode) {
- case EV_SIZING_BEST_FIT:
- requisition->width = MIN_SCALE * ((float) width) / view->scale;
- requisition->height = MIN_SCALE * ((float) height) / view->scale;
- break;
- case EV_SIZING_FIT_WIDTH:
- requisition->width = MIN_SCALE * ((float) width) / view->scale;
- requisition->height = height + border.top + border.bottom;
- requisition->height += view->spacing * 2;
- break;
- case EV_SIZING_FREE:
- requisition->width = width + border.left + border.right;
- requisition->height = height + border.top + border.bottom;
- requisition->width += view->spacing * 2;
- requisition->height += view->spacing * 2;
- break;
+ if (view->width >= 0) {
+ requisition->width = 0;
+ } else {
+ requisition->width = width + border.left + border.right +
+ view->spacing * 2;
+ }
+
+ if (view->height >= 0) {
+ requisition->height = 0;
+ } else {
+ requisition->height = height + border.top + border.bottom +
+ view->spacing * 2;
}
}
view->x_offset + border.left,
view->y_offset + border.top);
- LOG ("Render area %d %d %d %d", event->area.x, event->area.y,
- event->area.width, event->area.height);
+ LOG ("Render area %d %d %d %d - Offset %d %d",
+ event->area.x, event->area.y,
+ event->area.width, event->area.height,
+ view->x_offset, view->y_offset);
ev_document_render (view->document,
event->area.x, event->area.y,
view->scale = 1.0;
view->pressed_button = -1;
view->cursor = EV_VIEW_CURSOR_NORMAL;
- view->sizing_mode = EV_SIZING_BEST_FIT;
}
static void
}
static void
-document_changed_callback (EvDocument *document,
+page_changed_callback (EvDocument *document,
EvView *view)
{
gtk_widget_queue_draw (GTK_WIDGET (view));
}
}
+static void
+scale_changed_callback (EvDocument *document,
+ EvView *view)
+{
+ gtk_widget_queue_resize (GTK_WIDGET (view));
+}
+
/*** Public API ***/
GtkWidget*
view);
}
g_signal_connect (view->document,
- "changed",
- G_CALLBACK (document_changed_callback),
+ "page_changed",
+ G_CALLBACK (page_changed_callback),
+ view);
+ g_signal_connect (view->document,
+ "scale_changed",
+ G_CALLBACK (scale_changed_callback),
view);
}
}
}
-void
-ev_view_set_mode (EvView *view,
- EvSizingMode sizing_mode)
-{
- if (view->sizing_mode == sizing_mode)
- return;
-
- view->sizing_mode = sizing_mode;
- gtk_widget_queue_resize (GTK_WIDGET (view));
-}
-
static void
go_to_link (EvView *view, EvLink *link)
{
scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
- if (ABS (scale - view->scale) < ZOOM_EPSILON)
- return;
-
view->scale = scale;
ev_document_set_scale (view->document, view->scale);
-
- gtk_widget_queue_resize (GTK_WIDGET (view));
}
void
ev_view_zoom_in (EvView *view)
{
+ view->width = view->height = -1;
ev_view_zoom (view, ZOOM_IN_FACTOR, TRUE);
}
void
ev_view_zoom_out (EvView *view)
{
+ view->width = view->height = -1;
ev_view_zoom (view, ZOOM_OUT_FACTOR, TRUE);
}
-void
-ev_view_normal_size (EvView *view)
-{
- ev_view_zoom (view, 1.0, FALSE);
-}
-
-/* Unfortunately this is not idempotent (!) (numerical stability
- * issues because width and height are rounded) */
-void
-ev_view_best_fit (EvView *view, int allocation_width, int allocation_height)
+static double
+size_to_zoom_factor (EvView *view, int width, int height)
{
- int target_width, target_height;
- int width, height;
+ int doc_width, doc_height;
+ double scale, scale_w, scale_h;
GtkBorder border;
- if (!GTK_WIDGET_REALIZED (view) || view->document == NULL)
- return;
-
- width = height = 0;
- /* This is the bad part. You could make it stable by doing
- * ev_document_set_scale 1.0. But at least with pdf this means
- * redrawing the whole page */
- ev_document_get_page_size (view->document, -1, &width, &height);
+ doc_width = doc_height = 0;
+ scale = scale_w = scale_h = 1.0;
+ ev_document_get_page_size (view->document, -1, &doc_width, &doc_height);
/* FIXME: The border size isn't constant. Ugh. Still, if we have extra
* space, we just cut it from the border */
- ev_document_misc_get_page_border_size (width, height, &border);
+ ev_document_misc_get_page_border_size (doc_width, doc_height, &border);
- target_width = allocation_width - (view->spacing * 2 + border.left + border.right);
- target_height = allocation_height - (view->spacing * 2 + border.top + border.bottom);
+ if (doc_width == 0 && doc_height == 0) {
+ return 0;
+ }
- LOG ("Best fit %d %d", allocation_width, allocation_height);
+ if (width >= 0) {
+ int target_width;
- if (width != 0 && height != 0) {
- double scale;
- double scale_w, scale_h;
+ target_width = width - (view->spacing * 2 + border.left + border.right);
+ scale = scale_w = (double)target_width * view->scale / doc_width;
+ }
- scale_w = (double)target_width * view->scale / width;
- scale_h = (double)target_height * view->scale / height;
+ if (height >= 0) {
+ int target_height;
- scale = (scale_w < scale_h) ? scale_w : scale_h;
+ target_height = height - (view->spacing * 2 + border.top + border.bottom);
+ scale = scale_h = (double)target_height * view->scale / doc_height;
+ }
- ev_view_zoom (view, scale, FALSE);
+ if (width >= 0 && height >= 0) {
+ scale = (scale_w < scale_h) ? scale_w : scale_h;
}
+ return scale;
}
void
-ev_view_fit_width (EvView *view, int allocation_width, int allocation_height,
- int vsb_width)
+ev_view_set_size (EvView *view,
+ int width,
+ int height)
{
- int target_width, target_height;
- int width, height;
- GtkBorder border;
+ double factor;
- if (view->document == NULL)
+ if (!view->document) {
return;
+ }
- width = height = 0;
- ev_document_get_page_size (view->document, -1, &width, &height);
- ev_document_misc_get_page_border_size (width, height, &border);
-
- target_width = allocation_width - (view->spacing * 2 + border.left + border.right);
- target_height = allocation_height - (view->spacing * 2 + border.top + border.bottom);
-
- if (width) {
- double scale;
- scale = (double)target_width * view->scale / width;
-
- if (height * scale / view->scale > target_height)
- scale = ((double)(target_width - vsb_width) * view->scale / width);
-
- ev_view_zoom (view, scale, FALSE);
+ if (view->width != width ||
+ view->height != height) {
+ view->width = width;
+ view->height = height;
+ factor = size_to_zoom_factor (view, width, height);
+ ev_view_zoom (view, factor, FALSE);
}
}
https://www.fi.muni.cz/~kas/git / evince.git / blobdiff