diff options
author | Mark McLoughlin <mark@skynet.ie> | 2004-12-22 12:31:53 (GMT) |
---|---|---|
committer | Mark McLoughlin <markmc@src.gnome.org> | 2004-12-22 12:31:53 (GMT) |
commit | 7f32f6e5c1cd8f8868f6b0a26dde7259e79e5411 (patch) | |
tree | 32dd12abb27f7af8d0930592c5da5fef04a87f38 /shell/ev-view.c | |
parent | f36af012943a93a0c8e1f2d36c4f5b9e1ac1b8e5 (diff) |
add zooming.
2004-12-22 Mark McLoughlin <mark@skynet.ie>
* shell/ev-view.[ch]:
(ev_view_zoom), (ev_view_zoom_in), (ev_view_zoom_out),
(ev_view_normal_size), (ev_view_best_fit), (ev_view_fit_width):
add zooming.
* shell/ev-window.c: (ev_window_cmd_view_zoom_in),
(ev_window_cmd_view_zoom_out), (ev_window_cmd_view_normal_size),
(ev_window_cmd_view_best_fit), (ev_window_cmd_view_page_width):
hook it up.
* pdf/xpdf/pdf-document.cc:
(pdf_document_begin_find),
(pdf_document_end_find): make static.
Diffstat (limited to 'shell/ev-view.c')
-rw-r--r-- | shell/ev-view.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/shell/ev-view.c b/shell/ev-view.c index a928ed3..78a75d9 100644 --- a/shell/ev-view.c +++ b/shell/ev-view.c @@ -41,6 +41,8 @@ struct _EvView { GtkAdjustment *vadjustment; GArray *find_results; + + double scale; }; struct _EvViewClass { @@ -457,6 +459,8 @@ static void ev_view_init (EvView *view) { static const GdkColor white = { 0, 0xffff, 0xffff, 0xffff }; + + view->scale = 1.0; gtk_widget_modify_bg (GTK_WIDGET (view), GTK_STATE_NORMAL, &white); @@ -552,3 +556,84 @@ ev_view_get_page (EvView *view) else return 1; } + +#define ZOOM_IN_FACTOR 1.2 +#define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR) + +#define MIN_SCALE 0.05409 +#define MAX_SCALE 18.4884 + +static void +ev_view_zoom (EvView *view, + double factor, + gboolean relative) +{ + double scale; + + if (relative) + scale = view->scale * factor; + else + scale = factor; + + view->scale = CLAMP (scale, MIN_SCALE, MAX_SCALE); + + ev_document_set_scale (view->document, view->scale); + + gtk_widget_queue_draw (GTK_WIDGET (view)); +} + +void +ev_view_zoom_in (EvView *view) +{ + ev_view_zoom (view, ZOOM_IN_FACTOR, TRUE); +} + +void +ev_view_zoom_out (EvView *view) +{ + ev_view_zoom (view, ZOOM_OUT_FACTOR, TRUE); +} + +void +ev_view_normal_size (EvView *view) +{ + ev_view_zoom (view, 1.0, FALSE); +} + +void +ev_view_best_fit (EvView *view) +{ + double scale; + int width, height; + + width = height = 0; + ev_document_get_page_size (view->document, &width, &height); + + scale = 1.0; + if (width != 0 && height != 0) { + double scale_w, scale_h; + + scale_w = (double)GTK_WIDGET (view)->allocation.width / width; + scale_h = (double)GTK_WIDGET (view)->allocation.height / height; + + scale = (scale_w < scale_h) ? scale_w : scale_h; + } + + ev_view_zoom (view, scale, FALSE); +} + +void +ev_view_fit_width (EvView *view) +{ + double scale = 1.0; + int width; + + width = 0; + ev_document_get_page_size (view->document, &width, NULL); + + scale = 1.0; + if (width != 0) + scale = (double)GTK_WIDGET (view)->allocation.width / width; + + ev_view_zoom (view, scale, FALSE); +} |