mirror of
https://git.pwmt.org/pwmt/zathura.git
synced 2024-09-21 09:21:19 +02:00
104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
/* See LICENSE file for license and copyright information */
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#include <callbacks.h>
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#include <girara.h>
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#include <stdlib.h>
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#include <gtk/gtk.h>
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#include "zathura.h"
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#include "ft/document.h"
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gboolean
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cb_destroy(GtkWidget* widget, gpointer data)
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{
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if(Zathura.UI.session) {
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girara_session_destroy(Zathura.UI.session);
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}
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return TRUE;
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}
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void
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buffer_changed(girara_session_t* session)
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{
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g_return_if_fail(session != NULL);
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char* buffer = girara_buffer_get(session);
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if(buffer) {
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girara_statusbar_item_set_text(session, Zathura.UI.statusbar.buffer, buffer);
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free(buffer);
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} else {
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girara_statusbar_item_set_text(session, Zathura.UI.statusbar.buffer, "");
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}
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}
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void
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cb_view_vadjustment_value_changed(GtkAdjustment *adjustment, gpointer data)
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{
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if(!Zathura.document || !Zathura.document->pages || !Zathura.UI.page_view) {
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return;
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}
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/* get current adjustment values */
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gdouble lower = gtk_adjustment_get_value(adjustment);
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gdouble upper = lower + gtk_adjustment_get_page_size(adjustment);
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/* find page that fits */
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for(unsigned int page_id = 0; page_id < Zathura.document->number_of_pages; page_id++)
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{
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zathura_page_t* page = Zathura.document->pages[page_id];
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/* check for rendered attribute */
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if(page->rendered) {
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continue;
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}
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double begin = page->offset;
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double end = page->offset + page->height;
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if( ( (begin >= lower) && (end <= upper) ) /* page is in viewport */
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|| ( (begin <= lower) && (end >= lower) && (end <= upper) ) /* end of the page is in viewport */
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|| ( (begin >= lower) && (end >= upper) && (begin <= upper) ) /* begin of the page is in viewport */
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) {
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/* render page */
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GtkWidget* image = zathura_page_render(page);
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if(!image) {
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printf("error: rendering failed\n");
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return;
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}
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/* add new page */
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GList* list = gtk_container_get_children(GTK_CONTAINER(Zathura.UI.page_view));
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GtkWidget* widget = (GtkWidget*) g_list_nth_data(list, page_id);
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if(widget) {
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/* child packaging information */
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gboolean expand;
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gboolean fill;
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guint padding;
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GtkPackType pack_type;
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gtk_box_query_child_packing(GTK_BOX(Zathura.UI.page_view), widget, &expand, &fill, &padding, &pack_type);
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/* delete old widget */
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gtk_container_remove(GTK_CONTAINER(Zathura.UI.page_view), widget);
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/* add new widget */
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gtk_box_pack_start(GTK_BOX(Zathura.UI.page_view), image, TRUE, TRUE, 0);
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/* set old packaging values */
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gtk_box_set_child_packing(GTK_BOX(Zathura.UI.page_view), image, expand, fill, padding, pack_type);
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/* reorder child */
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gtk_box_reorder_child(GTK_BOX(Zathura.UI.page_view), image, page_id);
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} else {
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printf("error: page container does not exist\n");
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g_object_unref(image);
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return;
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}
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}
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}
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}
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