X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=libview%2Fev-view.c;h=973da901eb5be6aaaa2f7194e47873086be2d3e3;hb=00632264c5cb956ee6d66b00d14bbd4ad9f96efd;hp=0f55725a36d8a08ba9f8f30e18b71719b3fa08a3;hpb=a0a33873e264096c867ae64201041ca3d0a87f1a;p=evince.git diff --git a/libview/ev-view.c b/libview/ev-view.c index 0f55725a..973da901 100644 --- a/libview/ev-view.c +++ b/libview/ev-view.c @@ -87,8 +87,6 @@ typedef enum { #define SCROLL_TIME 150 /*** Scrolling ***/ -static void scroll_to_current_page (EvView *view, - GtkOrientation orientation); static void ev_view_set_scroll_adjustments (GtkLayout *layout, GtkAdjustment *hadjustment, GtkAdjustment *vadjustment); @@ -483,36 +481,30 @@ ev_view_get_height_to_page (EvView *view, } static void -scroll_to_current_page (EvView *view, GtkOrientation orientation) +scroll_to_point (EvView *view, + gdouble x, + gdouble y, + GtkOrientation orientation) { - GdkPoint view_point; - - if (view->document == NULL) { - return; - } - - doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point); - if (orientation == GTK_ORIENTATION_VERTICAL) { if (view->continuous) { gtk_adjustment_clamp_page (view->vadjustment, - view_point.y - view->spacing / 2, - view_point.y + view->vadjustment->page_size); + y - view->spacing / 2, + y + view->vadjustment->page_size); } else { gtk_adjustment_set_value (view->vadjustment, - CLAMP (view_point.y, + CLAMP (y, view->vadjustment->lower, view->vadjustment->upper - view->vadjustment->page_size)); } } else { if (view->dual_page) { - gtk_adjustment_clamp_page (view->hadjustment, - view_point.x, - view_point.x + view->hadjustment->page_size); + gtk_adjustment_clamp_page (view->hadjustment, x, + x + view->hadjustment->page_size); } else { gtk_adjustment_set_value (view->hadjustment, - CLAMP (view_point.x, + CLAMP (x, view->hadjustment->lower, view->hadjustment->upper - view->hadjustment->page_size)); @@ -520,6 +512,34 @@ scroll_to_current_page (EvView *view, GtkOrientation orientation) } } +static void +ev_view_scroll_to_page_position (EvView *view, GtkOrientation orientation) +{ + gdouble x, y; + + if (!view->document) + return; + + if ((orientation == GTK_ORIENTATION_VERTICAL && view->pending_point.y == 0) || + (orientation == GTK_ORIENTATION_HORIZONTAL && view->pending_point.x == 0)) { + GdkRectangle page_area; + GtkBorder border; + + get_page_extents (view, view->current_page, &page_area, &border); + x = page_area.x; + y = page_area.y; + } else { + GdkPoint view_point; + + doc_point_to_view_point (view, view->current_page, + &view->pending_point, &view_point); + x = view_point.x; + y = view_point.y; + } + + scroll_to_point (view, x, y, orientation); +} + static void view_set_adjustment_values (EvView *view, GtkOrientation orientation) @@ -574,7 +594,7 @@ view_set_adjustment_values (EvView *view, gtk_adjustment_set_value (adjustment, (int)new_value); break; case SCROLL_TO_PAGE_POSITION: - scroll_to_current_page (view, orientation); + ev_view_scroll_to_page_position (view, orientation); break; case SCROLL_TO_CENTER: new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5, @@ -747,6 +767,79 @@ add_scroll_binding_keypad (GtkBindingSet *binding_set, G_TYPE_BOOLEAN, horizontal); } +static gdouble +compute_scroll_increment (EvView *view, + GtkScrollType scroll) +{ + GtkWidget *widget = GTK_WIDGET (view); + GtkAdjustment *adjustment = view->vadjustment; + GdkRegion *text_region, *region; + gint page; + GdkRectangle rect; + EvRectangle doc_rect; + GdkRectangle page_area; + GtkBorder border; + GdkRectangle *recs; + gint n_recs; + gdouble fraction = 1.0; + + if (scroll != GTK_SCROLL_PAGE_BACKWARD && scroll != GTK_SCROLL_PAGE_FORWARD) + return adjustment->page_size; + + page = scroll == GTK_SCROLL_PAGE_BACKWARD ? view->start_page : view->end_page; + + text_region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page); + if (!text_region || gdk_region_empty (text_region)) + return adjustment->page_size; + + get_page_extents (view, page, &page_area, &border); + rect.x = page_area.x + view->scroll_x; + rect.y = view->scroll_y + (scroll == GTK_SCROLL_PAGE_BACKWARD ? 5 : widget->allocation.height - 5); + rect.width = page_area.width; + rect.height = 1; + view_rect_to_doc_rect (view, &rect, &page_area, &doc_rect); + + /* Convert the doc rectangle into a GdkRectangle */ + rect.x = doc_rect.x1; + rect.y = doc_rect.y1; + rect.width = doc_rect.x2 - doc_rect.x1; + rect.height = MAX (1, doc_rect.y2 - doc_rect.y1); + region = gdk_region_rectangle (&rect); + + gdk_region_intersect (region, text_region); + gdk_region_get_rectangles (region, &recs, &n_recs); + gdk_region_destroy (region); + if (n_recs > 0) { + EvRenderContext *rc; + EvPage *ev_page; + + ev_page = ev_document_get_page (view->document, page); + rc = ev_render_context_new (ev_page, view->rotation, view->scale); + g_object_unref (ev_page); + /* Get the selection region to know the height of the line */ + doc_rect.x1 = doc_rect.x2 = recs[0].x + 0.5; + doc_rect.y1 = doc_rect.y2 = recs[0].y + 0.5; + + ev_document_doc_mutex_lock (); + region = ev_selection_get_selection_region (EV_SELECTION (view->document), + rc, EV_SELECTION_STYLE_LINE, + &doc_rect); + ev_document_doc_mutex_unlock (); + + g_object_unref (rc); + g_free (recs); + gdk_region_get_rectangles (region, &recs, &n_recs); + gdk_region_destroy (region); + if (n_recs > 0) { + fraction = 1 - (recs[0].height / adjustment->page_size); + } + g_free (recs); + } + + return adjustment->page_size * fraction; + +} + void ev_view_scroll (EvView *view, GtkScrollType scroll, @@ -777,7 +870,6 @@ ev_view_scroll (EvView *view, /* Assign values for increment and vertical adjustment */ adjustment = horizontal ? view->hadjustment : view->vadjustment; - increment = adjustment->page_size * 0.75; value = adjustment->value; /* Assign boolean for first and last page */ @@ -797,6 +889,7 @@ ev_view_scroll (EvView *view, ev_view_previous_page (view); /* Jump to the top */ } else { + increment = compute_scroll_increment (view, GTK_SCROLL_PAGE_BACKWARD); value = MAX (value - increment, adjustment->lower); } break; @@ -810,6 +903,7 @@ ev_view_scroll (EvView *view, ev_view_next_page (view); /* Jump to the bottom */ } else { + increment = compute_scroll_increment (view, GTK_SCROLL_PAGE_FORWARD); value = MIN (value + increment, adjustment->upper - adjustment->page_size); } break; @@ -5073,9 +5167,13 @@ ev_view_rotation_changed_cb (EvDocumentModel *model, if (view->pixbuf_cache) { ev_pixbuf_cache_clear (view->pixbuf_cache); + if (!ev_document_is_page_size_uniform (view->document)) + view->pending_scroll = SCROLL_TO_PAGE_POSITION; gtk_widget_queue_resize (GTK_WIDGET (view)); } + ev_view_remove_all (view); + if (rotation != 0) clear_selection (view); }