]> www.fi.muni.cz Git - evince.git/blobdiff - shell/ev-view.c
Rework sizing to deal with documents with not uniform page size.
[evince.git] / shell / ev-view.c
index 29c85f4682643f7ee42a5dd9921857a5acfcddf4..a3033ad896c4ff9b70ce7a43304f31c56f5eb61e 100644 (file)
@@ -18,6 +18,7 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  */
 
+#include <math.h>
 #include <gtk/gtkalignment.h>
 #include <glib/gi18n.h>
 #include <gtk/gtkbindings.h>
@@ -94,7 +95,7 @@ struct _EvView {
        gboolean pressed_button;
        gboolean has_selection;
        GdkPoint selection_start;
-       GdkRectangle selection;
+       EvRectangle selection;
        EvViewCursor cursor;
 
        GtkAdjustment *hadjustment;
@@ -257,29 +258,76 @@ ev_view_get_offsets (EvView *view, int *x_offset, int *y_offset)
 }
 
 static void
-view_rect_to_doc_rect (EvView *view, GdkRectangle *view_rect, GdkRectangle *doc_rect)
+view_rect_to_doc_rect (EvView *view, GdkRectangle *view_rect, EvRectangle *doc_rect)
 {
        int x_offset, y_offset;
 
        ev_view_get_offsets (view, &x_offset, &y_offset);
-       doc_rect->x = (view_rect->x - x_offset) / view->scale;
-       doc_rect->y = (view_rect->y - y_offset) / view->scale;
-       doc_rect->width = view_rect->width / view->scale;
-       doc_rect->height = view_rect->height / view->scale;
+       doc_rect->x1 = (double) (view_rect->x - x_offset) / view->scale;
+       doc_rect->y1 = (double) (view_rect->y - y_offset) / view->scale;
+       doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
+       doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 }
 
 static void
-doc_rect_to_view_rect (EvView *view, GdkRectangle *doc_rect, GdkRectangle *view_rect)
+doc_rect_to_view_rect (EvView *view, EvRectangle *doc_rect, GdkRectangle *view_rect)
 {
        int x_offset, y_offset;
 
        ev_view_get_offsets (view, &x_offset, &y_offset);
-       view_rect->x = doc_rect->x * view->scale + x_offset;
-       view_rect->y = doc_rect->y * view->scale + y_offset;
-       view_rect->width = doc_rect->width * view->scale;
-       view_rect->height = doc_rect->height * view->scale;
+       view_rect->x = floor (doc_rect->x1 * view->scale) + x_offset;
+       view_rect->y = floor (doc_rect->y1 * view->scale) + y_offset;
+       view_rect->width = ceil (doc_rect->x2 * view->scale) + x_offset - view_rect->x;
+       view_rect->height = ceil (doc_rect->y2 * view->scale) + y_offset - view_rect->y;
 }
 
+static void
+compute_zoom_factor (EvView *view)
+{
+       int doc_width, doc_height;
+       double scale, scale_w, scale_h;
+       GtkBorder border;
+
+       if (view->width <= 0 && view->height <= 0) {
+               return;
+       }
+
+       doc_width = doc_height = 0;
+       scale = scale_w = scale_h = 1.0;
+       ev_page_cache_get_size (view->page_cache,
+                               view->current_page,
+                               1.0,
+                               &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 (doc_width, doc_height, &border);
+
+       if (doc_width == 0 || doc_height == 0) {
+               return;
+       }
+
+       if (view->width >= 0) {
+               int target_width;
+
+               target_width = view->width - (view->spacing * 2 + border.left + border.right);
+               scale = scale_w = (double)target_width / doc_width;
+       }
+
+       if (view->height >= 0) {
+               int target_height;
+
+               target_height = view->height - (view->spacing * 2 + border.top + border.bottom);
+               scale = scale_h = (double)target_height / doc_height;
+       }
+
+       if (view->width >= 0 && view->height >= 0) {
+               scale = (scale_w < scale_h) ? scale_w : scale_h;
+       }
+
+       view->scale = scale;
+}
 
 /* Called by size_request to make sure we have appropriate jobs running.
  */
@@ -300,6 +348,8 @@ ev_view_size_request (GtkWidget      *widget,
                return;
        }
 
+       compute_zoom_factor (view);
+
        ev_page_cache_get_size (view->page_cache,
                                view->current_page,
                                view->scale,
@@ -436,9 +486,6 @@ draw_rubberband (GtkWidget *widget, GdkWindow *window,
        GdkPixbuf *pixbuf;
        GdkColor *fill_color_gdk;
        guint fill_color;
-       int x_offset, y_offset;
-
-       ev_view_get_offsets (EV_VIEW (widget), &x_offset, &y_offset);
 
        fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
        fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
@@ -449,7 +496,7 @@ draw_rubberband (GtkWidget *widget, GdkWindow *window,
 
        gdk_draw_pixbuf (window, NULL, pixbuf,
                         0, 0,
-                        rect->x + x_offset, rect->y + y_offset,
+                        rect->x, rect->y,
                         rect->width, rect->height,
                         GDK_RGB_DITHER_NONE,
                         0, 0);
@@ -459,7 +506,7 @@ draw_rubberband (GtkWidget *widget, GdkWindow *window,
        gc = gdk_gc_new (window);
        gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
        gdk_draw_rectangle (window, gc, FALSE,
-                           rect->x + x_offset, rect->y + y_offset,
+                           rect->x, rect->y,
                            rect->width - 1,
                            rect->height - 1);
        g_object_unref (gc);
@@ -478,19 +525,22 @@ highlight_find_results (EvView *view)
        find = EV_DOCUMENT_FIND (view->document);
 
        g_mutex_lock (EV_DOC_MUTEX);
-       results = ev_document_find_get_n_results (find);
+       results = ev_document_find_get_n_results (find, view->current_page);
        g_mutex_unlock (EV_DOC_MUTEX);
 
        for (i = 0; i < results; i++) {
-               GdkRectangle rectangle;
+               EvRectangle rectangle;
+               GdkRectangle view_rectangle;
                guchar alpha;
 
                alpha = (i == view->find_result) ? 0x90 : 0x20;
                g_mutex_lock (EV_DOC_MUTEX);
-               ev_document_find_get_result (find, i, &rectangle);
+               ev_document_find_get_result (find, view->current_page,
+                                            i, &rectangle);
                g_mutex_unlock (EV_DOC_MUTEX);
+               doc_rect_to_view_rect (view, &rectangle, &view_rectangle);
                draw_rubberband (GTK_WIDGET (view), view->bin_window,
-                                &rectangle, alpha);
+                                &view_rectangle, alpha);
         }
 }
 
@@ -617,12 +667,16 @@ void
 ev_view_copy (EvView *ev_view)
 {
        GtkClipboard *clipboard;
-       GdkRectangle selection;
        char *text;
 
-       doc_rect_to_view_rect (ev_view, &ev_view->selection, &selection);
+       if (!ev_document_can_get_text (ev_view->document)) {
+               return;
+       }
+
        g_mutex_lock (EV_DOC_MUTEX);
-       text = ev_document_get_text (ev_view->document, &selection);
+       text = ev_document_get_text (ev_view->document,
+                                    ev_view->current_page,
+                                    &ev_view->selection);
        g_mutex_unlock (EV_DOC_MUTEX);
 
        clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
@@ -638,12 +692,16 @@ ev_view_primary_get_cb (GtkClipboard     *clipboard,
                        gpointer          data)
 {
        EvView *ev_view = EV_VIEW (data);
-       GdkRectangle selection;
        char *text;
 
-       doc_rect_to_view_rect (ev_view, &ev_view->selection, &selection);
+       if (!ev_document_can_get_text (ev_view->document)) {
+               return;
+       }
+
        g_mutex_lock (EV_DOC_MUTEX);
-       text = ev_document_get_text (ev_view->document, &selection);
+       text = ev_document_get_text (ev_view->document,
+                                    ev_view->current_page,
+                                    &ev_view->selection);
        g_mutex_unlock (EV_DOC_MUTEX);
        gtk_selection_data_set_text (selection_data, text, -1);
 }
@@ -968,10 +1026,10 @@ ev_view_set_scroll_adjustments (EvView *view,
 }
 
 static void
-add_scroll_binding (GtkBindingSet  *binding_set,
-                   guint           keyval,
-                   GtkScrollType   scroll,
-                   gboolean        horizontal)
+add_scroll_binding_keypad (GtkBindingSet  *binding_set,
+                          guint           keyval,
+                          GtkScrollType   scroll,
+                          gboolean        horizontal)
 {
   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 
@@ -985,6 +1043,23 @@ add_scroll_binding (GtkBindingSet  *binding_set,
                                G_TYPE_BOOLEAN, horizontal);
 }
 
+static void
+add_scroll_binding_shifted (GtkBindingSet  *binding_set,
+                           guint           keyval,
+                           GtkScrollType   scroll_normal,
+                           GtkScrollType   scroll_shifted,
+                           gboolean        horizontal)
+{
+  gtk_binding_entry_add_signal (binding_set, keyval, 0,
+                                "scroll_view", 2,
+                                GTK_TYPE_SCROLL_TYPE, scroll_normal,
+                               G_TYPE_BOOLEAN, horizontal);
+  gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
+                                "scroll_view", 2,
+                                GTK_TYPE_SCROLL_TYPE, scroll_shifted,
+                               G_TYPE_BOOLEAN, horizontal);
+}
+
 static void
 ev_view_jump (EvView        *view,
              GtkScrollType  scroll)
@@ -1177,16 +1252,16 @@ ev_view_class_init (EvViewClass *class)
 
        binding_set = gtk_binding_set_by_class (class);
 
-       add_scroll_binding (binding_set, GDK_Left,  GTK_SCROLL_STEP_BACKWARD, TRUE);
-       add_scroll_binding (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD,  TRUE);
-       add_scroll_binding (binding_set, GDK_Up,    GTK_SCROLL_STEP_BACKWARD, FALSE);
-       add_scroll_binding (binding_set, GDK_Down,  GTK_SCROLL_STEP_FORWARD,  FALSE);
+       add_scroll_binding_keypad (binding_set, GDK_Left,  GTK_SCROLL_STEP_BACKWARD, TRUE);
+       add_scroll_binding_keypad (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD,  TRUE);
+       add_scroll_binding_keypad (binding_set, GDK_Up,    GTK_SCROLL_STEP_BACKWARD, FALSE);
+       add_scroll_binding_keypad (binding_set, GDK_Down,  GTK_SCROLL_STEP_FORWARD,  FALSE);
 
-       add_scroll_binding (binding_set, GDK_Page_Up,   GTK_SCROLL_PAGE_BACKWARD, FALSE);
-       add_scroll_binding (binding_set, GDK_Page_Down, GTK_SCROLL_PAGE_FORWARD,  FALSE);
+       add_scroll_binding_keypad (binding_set, GDK_Page_Up,   GTK_SCROLL_PAGE_BACKWARD, FALSE);
+       add_scroll_binding_keypad (binding_set, GDK_Page_Down, GTK_SCROLL_PAGE_FORWARD,  FALSE);
 
-       add_scroll_binding (binding_set, GDK_space, EV_SCROLL_PAGE_FORWARD, FALSE);
-       add_scroll_binding (binding_set, GDK_BackSpace, EV_SCROLL_PAGE_BACKWARD, FALSE);
+       add_scroll_binding_shifted (binding_set, GDK_space, EV_SCROLL_PAGE_FORWARD, EV_SCROLL_PAGE_BACKWARD, FALSE);
+       add_scroll_binding_shifted (binding_set, GDK_BackSpace, EV_SCROLL_PAGE_BACKWARD, EV_SCROLL_PAGE_FORWARD, FALSE);
 }
 
 static void
@@ -1207,12 +1282,13 @@ update_find_status_message (EvView *view)
        char *message;
 
 //     g_mutex_lock (EV_DOC_MUTEX);
-       if (ev_document_get_page (view->document) == view->find_page) {
+       if (view->current_page == view->find_page) {
                int results;
 
 //             g_mutex_lock (EV_DOC_MUTEX);
                results = ev_document_find_get_n_results
-                               (EV_DOCUMENT_FIND (view->document));
+                               (EV_DOCUMENT_FIND (view->document),
+                                view->current_page);
 //             g_mutex_unlock (EV_DOC_MUTEX);
                /* TRANS: Sometimes this could be better translated as
                   "%d hit(s) on this page".  Therefore this string
@@ -1280,20 +1356,22 @@ static void
 jump_to_find_result (EvView *view)
 {
        EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
-       GdkRectangle rect;
+       EvRectangle rect;
+       GdkRectangle view_rect;
        int n_results;
 
        g_mutex_lock (EV_DOC_MUTEX);
-       n_results = ev_document_find_get_n_results (find);
+       n_results = ev_document_find_get_n_results (find, view->current_page);
        g_mutex_unlock (EV_DOC_MUTEX);
 
        if (n_results > view->find_result) {
                g_mutex_lock (EV_DOC_MUTEX);
                ev_document_find_get_result
-                       (find, view->find_result, &rect);
+                       (find, view->current_page, view->find_result, &rect);
                g_mutex_unlock (EV_DOC_MUTEX);
 
-               ensure_rectangle_is_visible (view, &rect);
+               doc_rect_to_view_rect (view, &rect, &view_rect);
+               ensure_rectangle_is_visible (view, &view_rect);
        }
 }
 
@@ -1334,12 +1412,8 @@ find_changed_cb (EvDocument *document, int page, EvView *view)
        jump_to_find_result (view);
        update_find_status_message (view);
 
-#if 0
-       /* FIXME: */
-       if (ev_document_get_page (document) == page) {
+       if (view->current_page == page)
                gtk_widget_queue_draw (GTK_WIDGET (view));
-       }
-#endif
 }
 /*** Public API ***/
 
@@ -1385,6 +1459,8 @@ page_changed_cb (EvPageCache *page_cache,
        view->current_page = new_page;
        view->has_selection = FALSE;
 
+       compute_zoom_factor (view);
+
        ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
                                        view->current_page,
                                        view->current_page,
@@ -1443,6 +1519,12 @@ ev_view_set_document (EvView     *view,
        }
 }
 
+int
+ev_view_get_page        (EvView     *view)
+{
+       return view->current_page;
+}
+
 static void
 go_to_link (EvView *view, EvLink *link)
 {
@@ -1487,83 +1569,34 @@ ev_view_zoom (EvView   *view,
        scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
 
        view->scale = scale;
+       view->width = view->height = -1;
        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);
 }
 
-static double
-size_to_zoom_factor (EvView *view, int width, int height)
-{
-       int doc_width, doc_height;
-       double scale, scale_w, scale_h;
-       GtkBorder border;
-
-       doc_width = doc_height = 0;
-       scale = scale_w = scale_h = 1.0;
-       ev_page_cache_get_size (view->page_cache,
-                               view->current_page,
-                               view->scale,
-                               &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 (doc_width, doc_height, &border);
-
-       if (doc_width == 0 && doc_height == 0) {
-               return 0;
-       }
-
-       if (width >= 0) {
-               int target_width;
-
-               target_width = width - (view->spacing * 2 + border.left + border.right);
-               scale = scale_w = (double)target_width * view->scale / doc_width;
-       }
-
-       if (height >= 0) {
-               int target_height;
-
-               target_height = height - (view->spacing * 2 + border.top + border.bottom);
-               scale = scale_h = (double)target_height * view->scale / doc_height;
-       }
-
-       if (width >= 0 && height >= 0) {
-               scale = (scale_w < scale_h) ? scale_w : scale_h;
-       }
-
-       return scale;
-}
-
 void
 ev_view_set_size (EvView     *view,
                  int         width,
                  int         height)
 {
-       double factor;
-
-       if (!view->document)
+       if (!view->document) {
                return;
+       }
 
-       if (view->width != width ||
-           view->height != height) {
+       if (width != view->width || height != view->height) {
                view->width = width;
                view->height = height;
-               factor = size_to_zoom_factor (view, width, height);
-               ev_view_zoom (view, factor, FALSE);
                gtk_widget_queue_resize (GTK_WIDGET (view));
        }
 }
@@ -1584,6 +1617,22 @@ ev_view_get_find_status (EvView *view)
        return view->find_status;
 }
 
+gboolean
+ev_view_can_find_next (EvView *view)
+{
+       int n_results = 0;
+
+       if (EV_IS_DOCUMENT_FIND (view->document)) {
+               EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
+
+               g_mutex_lock (EV_DOC_MUTEX);
+               n_results = ev_document_find_get_n_results (find, view->current_page);
+               g_mutex_unlock (EV_DOC_MUTEX);
+       }
+
+       return n_results > 0;
+}
+
 void
 ev_view_find_next (EvView *view)
 {
@@ -1593,7 +1642,7 @@ ev_view_find_next (EvView *view)
 
        page_cache = ev_document_get_page_cache (view->document);
        g_mutex_lock (EV_DOC_MUTEX);
-       n_results = ev_document_find_get_n_results (find);
+       n_results = ev_document_find_get_n_results (find, view->current_page);
        g_mutex_unlock (EV_DOC_MUTEX);
 
        n_pages = ev_page_cache_get_n_pages (page_cache);
@@ -1625,7 +1674,7 @@ ev_view_find_previous (EvView *view)
        page_cache = ev_document_get_page_cache (view->document);
 
        g_mutex_lock (EV_DOC_MUTEX);
-       n_results = ev_document_find_get_n_results (find);
+       n_results = ev_document_find_get_n_results (find, view->current_page);
        g_mutex_unlock (EV_DOC_MUTEX);
 
        n_pages = ev_page_cache_get_n_pages (page_cache);