127 lines
3.3 KiB
Vala
127 lines
3.3 KiB
Vala
/*
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* pdf-presenter - advanced pdf presentation util
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*
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* Copyright (C) 2009-2012 Sebastian Reichel <sre@ring0.de>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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using Gtk;
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class PresentationView : DrawingArea {
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Poppler.Document doc;
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int page;
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bool shown = false;
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public PresentationView(Poppler.Document document, int n) {
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doc = document;
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page = n;
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this.expose_event.connect(draw_view);
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this.show.connect(() => {shown = true;});
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this.hide.connect(() => {shown = false;});
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}
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public void redraw() {
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if(shown) {
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unowned Gdk.Region r = this.window.get_clip_region();
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this.window.invalidate_region(r, true);
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this.window.process_updates(true);
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}
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}
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public void set_page(int n) {
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page = n;
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redraw();
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}
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public bool draw_view(Widget w, Gdk.EventExpose e) {
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int ww = 0, wh = 0;
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int x = 0, y = 0;
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var ctx = Gdk.cairo_create(w.window);
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var poppler_page = doc.get_page(page);
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/* get window size */
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get_parent_window().get_size(out ww, out wh);
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/* get document size */
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double width2, height2;
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poppler_page.get_size(out width2, out height2);
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/* calculate faktor */
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double wf = ww / width2;
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double hf = wh / height2;
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double faktor = wf > hf ? hf : wf;
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/* center image */
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int width = (int) (faktor*width2);
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int height = (int) (faktor*height2);
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if(ww > width)
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x = (ww-width)/2;
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if(wh > height)
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y = (wh-height)/2;
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ctx.translate(x,y);
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/* scale page */
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ctx.scale(faktor, faktor);
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/* draw page */
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poppler_page.render(ctx);
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ctx.stroke();
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/* black background */
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ctx.translate(-x,-y);
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ctx.set_source_rgb(0, 0, 0);
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if(x > 0) {
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ctx.rectangle(0, 0, x, (int)height2+1);
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ctx.fill();
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ctx.rectangle(x+(int)width2, 0, x, (int)height2+1);
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ctx.fill();
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}
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if(y > 0) {
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ctx.rectangle(0, 0, (int)width2+1, y);
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ctx.fill();
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ctx.rectangle(0, y+(int)height2, (int)width2+1, y);
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ctx.fill();
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}
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return true;
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}
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}
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class PresentationWindow : Window {
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private PresentationView view;
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public PresentationWindow(Poppler.Document doc, int page) {
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title = "PDF Presentator (View)";
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position = WindowPosition.CENTER;
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view = new PresentationView(doc, page);
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add(view);
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set_default_size(800,600);
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this.delete_event.connect(hide_on_delete);
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return;
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}
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public void set_page(int n) {
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view.set_page(n);
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}
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}
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