X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=shell%2Fev-view.c;h=b51082f24dfde8aada92f9c383fe296bb24cfd49;hb=594edf9b1277d5ec88892c2ea02c2bdc2f2e8b0e;hp=f52b372778c11d56b31ac5991454292b3405a9fe;hpb=694748d4887f8ffd866ae30c1660e86af2ceafed;p=evince.git diff --git a/shell/ev-view.c b/shell/ev-view.c index f52b3727..b51082f2 100644 --- a/shell/ev-view.c +++ b/shell/ev-view.c @@ -1,3 +1,4 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */ /* this file is part of evince, a gnome document viewer * * Copyright (C) 2004 Red Hat, Inc @@ -17,27 +18,104 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. */ +#include #include +#include +#include +#include +#include +#include +#include #include "ev-marshal.h" #include "ev-view.h" +#include "ev-document-find.h" +#include "ev-document-misc.h" +#include "ev-debug.h" +#include "ev-job-queue.h" +#include "ev-page-cache.h" +#include "ev-pixbuf-cache.h" #define EV_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass)) #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW)) #define EV_VIEW_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass)) +enum { + PROP_0, + PROP_STATUS, + PROP_FIND_STATUS +}; + +enum { + TARGET_STRING, + TARGET_TEXT, + TARGET_COMPOUND_TEXT, + TARGET_UTF8_STRING, + TARGET_TEXT_BUFFER_CONTENTS +}; + +enum { + EV_SCROLL_PAGE_FORWARD, + EV_SCROLL_PAGE_BACKWARD +}; + +static const GtkTargetEntry targets[] = { + { "STRING", 0, TARGET_STRING }, + { "TEXT", 0, TARGET_TEXT }, + { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT }, + { "UTF8_STRING", 0, TARGET_UTF8_STRING }, +}; + +typedef enum { + EV_VIEW_CURSOR_NORMAL, + EV_VIEW_CURSOR_LINK, + EV_VIEW_CURSOR_WAIT, + EV_VIEW_CURSOR_HIDDEN +} EvViewCursor; + +#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 + struct _EvView { GtkWidget parent_instance; EvDocument *document; - + GdkWindow *bin_window; - + + char *status; + char *find_status; + int scroll_x; int scroll_y; + gboolean pressed_button; + gboolean has_selection; + GdkPoint selection_start; + EvRectangle selection; + EvViewCursor cursor; + GtkAdjustment *hadjustment; GtkAdjustment *vadjustment; + + EvPageCache *page_cache; + EvPixbufCache *pixbuf_cache; + + gint current_page; + EvJobRender *current_job; + + int find_page; + int find_result; + int spacing; + + double scale; + int width; + int height; + GtkBorder border; + gboolean show_border; }; struct _EvViewClass { @@ -46,22 +124,27 @@ struct _EvViewClass { void (*set_scroll_adjustments) (EvView *view, GtkAdjustment *hadjustment, GtkAdjustment *vadjustment); + void (*scroll_view) (EvView *view, + GtkScrollType scroll, + gboolean horizontal); + }; + static void ev_view_set_scroll_adjustments (EvView *view, GtkAdjustment *hadjustment, GtkAdjustment *vadjustment); - + G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET) -/*** Helper functions ***/ - +/*** Helper functions ***/ + static void view_update_adjustments (EvView *view) { int old_x = view->scroll_x; int old_y = view->scroll_y; - + if (view->hadjustment) view->scroll_x = view->hadjustment->value; else @@ -71,7 +154,7 @@ view_update_adjustments (EvView *view) view->scroll_y = view->vadjustment->value; else view->scroll_y = 0; - + if (GTK_WIDGET_REALIZED (view) && (view->scroll_x != old_x || view->scroll_y != old_y)) { gdk_window_move (view->bin_window, - view->scroll_x, - view->scroll_y); @@ -101,7 +184,7 @@ view_set_adjustment_values (EvView *view, if (!adjustment) return; - + adjustment->page_size = allocation; adjustment->step_increment = allocation * 0.1; adjustment->page_increment = allocation * 0.9; @@ -118,17 +201,17 @@ view_set_adjustment_values (EvView *view, gtk_adjustment_value_changed (adjustment); } -/*** Virtual function implementations ***/ - +/*** Virtual function implementations ***/ + static void ev_view_finalize (GObject *object) { EvView *view = EV_VIEW (object); - if (view->document) - g_object_unref (view->document); + LOG ("Finalize"); - ev_view_set_scroll_adjustments (view, NULL, NULL); + g_free (view->status); + g_free (view->find_status); G_OBJECT_CLASS (ev_view_parent_class)->finalize (object); } @@ -138,28 +221,173 @@ ev_view_destroy (GtkObject *object) { EvView *view = EV_VIEW (object); + if (view->document) { + g_object_unref (view->document); + view->document = NULL; + } + if (view->pixbuf_cache) { + g_object_unref (view->pixbuf_cache); + view->pixbuf_cache = NULL; + } ev_view_set_scroll_adjustments (view, NULL, NULL); - + GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object); } +static void +ev_view_get_offsets (EvView *view, int *x_offset, int *y_offset) +{ + EvDocument *document = view->document; + GtkWidget *widget = GTK_WIDGET (view); + int width, height, target_width, target_height; + + g_return_if_fail (EV_IS_DOCUMENT (document)); + + ev_page_cache_get_size (view->page_cache, + view->current_page, + view->scale, + &width, &height); + + *x_offset = view->spacing; + *y_offset = view->spacing; + target_width = width + view->border.left + + view->border.right + view->spacing * 2; + target_height = height + view->border.top + + view->border.bottom + view->spacing * 2; + *x_offset += MAX (0, (widget->allocation.width - target_width) / 2); + *y_offset += MAX (0, (widget->allocation.height - target_height) / 2); +} + +static void +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->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, EvRectangle *doc_rect, GdkRectangle *view_rect) +{ + int x_offset, y_offset; + + ev_view_get_offsets (view, &x_offset, &y_offset); + 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_border (EvView *view, int width, int height, GtkBorder *border) +{ + if (view->show_border) { + ev_document_misc_get_page_border_size (width, height, border); + } else { + border->left = 0; + border->right = 0; + border->top = 0; + border->bottom = 0; + } +} + +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); + + compute_border (view, 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 + view->border.left + + view->border.right); + scale = scale_w = (double)target_width / doc_width; + } + + if (view->height >= 0) { + int target_height; + + target_height = view->height - (view->spacing * 2 + view->border.top + + view->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. + */ static void ev_view_size_request (GtkWidget *widget, GtkRequisition *requisition) { EvView *view = EV_VIEW (widget); + gint width, height; - if (GTK_WIDGET_REALIZED (widget)) { - if (view->document) { - ev_document_get_page_size (view->document, - &requisition->width, - &requisition->height); - } else { - requisition->width = 10; - requisition->height = 10; - } + if (!GTK_WIDGET_REALIZED (widget)) + return; + + if (!view->document) { + requisition->width = 1; + requisition->height = 1; + return; + } + + compute_zoom_factor (view); + + ev_page_cache_get_size (view->page_cache, + view->current_page, + view->scale, + &width, &height); + + compute_border (view, width, height, &(view->border)); + + ev_pixbuf_cache_set_page_range (view->pixbuf_cache, + view->current_page, + view->current_page, + view->scale); + + if (view->width >= 0) { + requisition->width = 0; + } else { + requisition->width = width + view->border.left + + view->border.right + view->spacing * 2; + } + + if (view->height >= 0) { + requisition->height = 0; + } else { + requisition->height = height + view->border.top + + view->border.bottom + view->spacing * 2; } - } static void @@ -180,17 +408,6 @@ ev_view_size_allocate (GtkWidget *widget, } } -static void -update_window_backgrounds (EvView *view) -{ - GtkWidget *widget = GTK_WIDGET (view); - - if (GTK_WIDGET_REALIZED (view)) { - gdk_window_set_background (view->bin_window, - &widget->style->base[GTK_WIDGET_STATE (widget)]); - } -} - static void ev_view_realize (GtkWidget *widget) { @@ -198,18 +415,19 @@ ev_view_realize (GtkWidget *widget) GdkWindowAttr attributes; GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED); - + + attributes.window_type = GDK_WINDOW_CHILD; attributes.wclass = GDK_INPUT_OUTPUT; attributes.visual = gtk_widget_get_visual (widget); attributes.colormap = gtk_widget_get_colormap (widget); - + attributes.x = widget->allocation.x; attributes.y = widget->allocation.y; attributes.width = widget->allocation.width; attributes.height = widget->allocation.height; attributes.event_mask = 0; - + widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, GDK_WA_X | GDK_WA_Y | @@ -217,13 +435,20 @@ ev_view_realize (GtkWidget *widget) GDK_WA_VISUAL); gdk_window_set_user_data (widget->window, widget); widget->style = gtk_style_attach (widget->style, widget->window); - + gdk_window_set_background (widget->window, &widget->style->mid[widget->state]); + attributes.x = 0; attributes.y = 0; attributes.width = MAX (widget->allocation.width, widget->requisition.width); attributes.height = MAX (widget->allocation.height, widget->requisition.height); - attributes.event_mask = GDK_EXPOSURE_MASK; - + attributes.event_mask = GDK_EXPOSURE_MASK | + GDK_BUTTON_PRESS_MASK | + GDK_BUTTON_RELEASE_MASK | + GDK_SCROLL_MASK | + GDK_KEY_PRESS_MASK | + GDK_POINTER_MOTION_MASK | + GDK_LEAVE_NOTIFY_MASK; + view->bin_window = gdk_window_new (widget->window, &attributes, GDK_WA_X | GDK_WA_Y | @@ -232,9 +457,10 @@ ev_view_realize (GtkWidget *widget) gdk_window_set_user_data (view->bin_window, widget); gdk_window_show (view->bin_window); - if (view->document) { - ev_document_set_target (view->document, view->bin_window); + widget->style = gtk_style_attach (widget->style, view->bin_window); + gdk_window_set_background (view->bin_window, &widget->style->mid[widget->state]); + if (view->document) { /* We can't get page size without a target, so we have to * queue a size request at realization. Could be fixed * with EvDocument changes to allow setting a GdkScreen @@ -242,8 +468,6 @@ ev_view_realize (GtkWidget *widget) */ gtk_widget_queue_resize (widget); } - - update_window_backgrounds (view); } static void @@ -251,9 +475,6 @@ ev_view_unrealize (GtkWidget *widget) { EvView *view = EV_VIEW (widget); - if (view->document) - ev_document_set_target (view->document, NULL); - gdk_window_set_user_data (view->bin_window, NULL); gdk_window_destroy (view->bin_window); view->bin_window = NULL; @@ -261,30 +482,157 @@ ev_view_unrealize (GtkWidget *widget) GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (widget); } +static guint32 +ev_gdk_color_to_rgb (const GdkColor *color) +{ + guint32 result; + result = (0xff0000 | (color->red & 0xff00)); + result <<= 8; + result |= ((color->green & 0xff00) | (color->blue >> 8)); + return result; +} + static void -ev_view_style_set (GtkWidget *widget, - GtkStyle *previous_style) +draw_rubberband (GtkWidget *widget, GdkWindow *window, + const GdkRectangle *rect, guchar alpha) { - update_window_backgrounds (EV_VIEW (widget)); + GdkGC *gc; + GdkPixbuf *pixbuf; + GdkColor *fill_color_gdk; + guint fill_color; + + fill_color_gdk = gdk_color_copy (>K_WIDGET (widget)->style->base[GTK_STATE_SELECTED]); + fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha; + + pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, + rect->width, rect->height); + gdk_pixbuf_fill (pixbuf, fill_color); + + gdk_draw_pixbuf (window, NULL, pixbuf, + 0, 0, + rect->x, rect->y, + rect->width, rect->height, + GDK_RGB_DITHER_NONE, + 0, 0); + + g_object_unref (pixbuf); + + gc = gdk_gc_new (window); + gdk_gc_set_rgb_fg_color (gc, fill_color_gdk); + gdk_draw_rectangle (window, gc, FALSE, + rect->x, rect->y, + rect->width - 1, + rect->height - 1); + g_object_unref (gc); + + gdk_color_free (fill_color_gdk); } static void -ev_view_state_changed (GtkWidget *widget, - GtkStateType previous_state) +highlight_find_results (EvView *view) { - update_window_backgrounds (EV_VIEW (widget)); + EvDocumentFind *find; + int i, results = 0; + + g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document)); + + find = EV_DOCUMENT_FIND (view->document); + + g_mutex_lock (EV_DOC_MUTEX); + results = ev_document_find_get_n_results (find, view->current_page); + g_mutex_unlock (EV_DOC_MUTEX); + + for (i = 0; i < results; i++) { + 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, 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, + &view_rectangle, alpha); + } } + static void expose_bin_window (GtkWidget *widget, GdkEventExpose *event) { EvView *view = EV_VIEW (widget); - - if (view->document) - ev_document_render (view->document, - event->area.x, event->area.y, - event->area.width, event->area.height); + gint width, height; + GdkRectangle area; + int x_offset, y_offset; + GdkPixbuf *scaled_image; + GdkPixbuf *current_pixbuf; + + if (view->document == NULL) + return; + + ev_view_get_offsets (view, &x_offset, &y_offset); + ev_page_cache_get_size (view->page_cache, + view->current_page, + view->scale, + &width, &height); + + /* Paint the frame */ + area.x = x_offset; + area.y = y_offset; + area.width = width + view->border.left + view->border.right; + area.height = height + view->border.top + view->border.bottom; + + if (view->show_border) { + ev_document_misc_paint_one_page (view->bin_window, widget, &area, + &(view->border)); + } + + /* Render the document itself */ + LOG ("Render area %d %d %d %d - Offset %d %d", + event->area.x, event->area.y, + event->area.width, event->area.height, + x_offset, y_offset); + + current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, view->current_page); + + if (current_pixbuf == NULL) + scaled_image = NULL; + else if (width == gdk_pixbuf_get_width (current_pixbuf) && + height == gdk_pixbuf_get_height (current_pixbuf)) + scaled_image = g_object_ref (current_pixbuf); + else + scaled_image = gdk_pixbuf_scale_simple (current_pixbuf, + width, height, + GDK_INTERP_NEAREST); + if (scaled_image) { + gdk_draw_pixbuf (view->bin_window, + GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL], + scaled_image, + 0, 0, + area.x + view->border.left, + area.y + view->border.top, + width, height, + GDK_RGB_DITHER_NORMAL, + 0, 0); + g_object_unref (scaled_image); + } + + if (EV_IS_DOCUMENT_FIND (view->document)) { + highlight_find_results (view); + } + + if (view->has_selection) { + GdkRectangle rubberband; + + doc_rect_to_view_rect (view, &view->selection, &rubberband); + if (rubberband.width > 0 && rubberband.height > 0) { + draw_rubberband (widget, view->bin_window, + &rubberband, 0x40); + } + } } static gboolean @@ -299,32 +647,377 @@ ev_view_expose_event (GtkWidget *widget, return GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event (widget, event); return FALSE; - +} + +void +ev_view_select_all (EvView *ev_view) +{ + GtkWidget *widget = GTK_WIDGET (ev_view); + GdkRectangle selection; + int width, height; + int x_offset, y_offset; + + g_return_if_fail (EV_IS_VIEW (ev_view)); + + + ev_view_get_offsets (ev_view, &x_offset, &y_offset); + ev_page_cache_get_size (ev_view->page_cache, + ev_view->current_page, + ev_view->scale, + &width, &height); + + ev_view->has_selection = TRUE; + selection.x = x_offset + ev_view->border.left; + selection.y = y_offset + ev_view->border.top; + selection.width = width; + selection.height = height; + view_rect_to_doc_rect (ev_view, &selection, &ev_view->selection); + + gtk_widget_queue_draw (widget); +} + +void +ev_view_copy (EvView *ev_view) +{ + GtkClipboard *clipboard; + char *text; + + if (!ev_document_can_get_text (ev_view->document)) { + return; + } + + g_mutex_lock (EV_DOC_MUTEX); + 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), + GDK_SELECTION_CLIPBOARD); + gtk_clipboard_set_text (clipboard, text, -1); + g_free (text); +} + +void +ev_view_set_show_border (EvView *view, gboolean show_border) +{ + g_return_if_fail (EV_IS_VIEW (view)); + + view->show_border = show_border; + + gtk_widget_queue_resize (GTK_WIDGET (view)); +} + +static void +ev_view_primary_get_cb (GtkClipboard *clipboard, + GtkSelectionData *selection_data, + guint info, + gpointer data) +{ + EvView *ev_view = EV_VIEW (data); + char *text; + + if (!ev_document_can_get_text (ev_view->document)) { + return; + } + + g_mutex_lock (EV_DOC_MUTEX); + 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); +} + +static void +ev_view_primary_clear_cb (GtkClipboard *clipboard, + gpointer data) +{ + EvView *ev_view = EV_VIEW (data); + + ev_view->has_selection = FALSE; +} + +static void +ev_view_update_primary_selection (EvView *ev_view) +{ + GtkClipboard *clipboard; + + clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view), + GDK_SELECTION_PRIMARY); + + if (ev_view->has_selection) { + if (!gtk_clipboard_set_with_owner (clipboard, + targets, + G_N_ELEMENTS (targets), + ev_view_primary_get_cb, + ev_view_primary_clear_cb, + G_OBJECT (ev_view))) + ev_view_primary_clear_cb (clipboard, ev_view); + } else { + if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view)) + gtk_clipboard_clear (clipboard); + } } static gboolean ev_view_button_press_event (GtkWidget *widget, GdkEventButton *event) { - /* EvView *view = EV_VIEW (widget); */ + EvView *view = EV_VIEW (widget); - return FALSE; + if (!GTK_WIDGET_HAS_FOCUS (widget)) { + gtk_widget_grab_focus (widget); + } + + view->pressed_button = event->button; + + switch (event->button) { + case 1: + if (view->has_selection) { + view->has_selection = FALSE; + gtk_widget_queue_draw (widget); + } + + view->selection_start.x = event->x; + view->selection_start.y = event->y; + break; + } + + return TRUE; +} + +static char * +status_message_from_link (EvView *view, EvLink *link) +{ + EvLinkType type; + char *msg = NULL; + char *page_label; + + type = ev_link_get_link_type (link); + + switch (type) { + case EV_LINK_TYPE_TITLE: + if (ev_link_get_title (link)) + msg = g_strdup (ev_link_get_title (link)); + break; + case EV_LINK_TYPE_PAGE: + page_label = ev_page_cache_get_page_label (view->page_cache, ev_link_get_page (link)); + msg = g_strdup_printf (_("Go to page %s"), page_label); + g_free (page_label); + break; + case EV_LINK_TYPE_EXTERNAL_URI: + msg = g_strdup (ev_link_get_uri (link)); + break; + default: + break; + } + + return msg; +} + +static void +ev_view_set_status (EvView *view, const char *message) +{ + g_return_if_fail (EV_IS_VIEW (view)); + + if (message != view->status) { + g_free (view->status); + view->status = g_strdup (message); + g_object_notify (G_OBJECT (view), "status"); + } +} + +static void +ev_view_set_find_status (EvView *view, const char *message) +{ + g_return_if_fail (EV_IS_VIEW (view)); + + g_free (view->find_status); + view->find_status = g_strdup (message); + g_object_notify (G_OBJECT (view), "find-status"); +} + +static GdkCursor * +ev_view_create_invisible_cursor(void) +{ + GdkBitmap *empty; + GdkColor black = { 0, 0, 0, 0 }; + static char bits[] = { 0x00 }; + + empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1); + + return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0); +} + +static void +ev_view_set_cursor (EvView *view, EvViewCursor new_cursor) +{ + GdkCursor *cursor = NULL; + GdkDisplay *display; + GtkWidget *widget; + + if (view->cursor == new_cursor) { + return; + } + + widget = gtk_widget_get_toplevel (GTK_WIDGET (view)); + display = gtk_widget_get_display (widget); + view->cursor = new_cursor; + + switch (new_cursor) { + case EV_VIEW_CURSOR_NORMAL: + gdk_window_set_cursor (widget->window, NULL); + break; + case EV_VIEW_CURSOR_LINK: + cursor = gdk_cursor_new_for_display (display, GDK_HAND2); + break; + case EV_VIEW_CURSOR_WAIT: + cursor = gdk_cursor_new_for_display (display, GDK_WATCH); + break; + case EV_VIEW_CURSOR_HIDDEN: + cursor = ev_view_create_invisible_cursor (); + break; + + } + + if (cursor) { + gdk_window_set_cursor (widget->window, cursor); + gdk_cursor_unref (cursor); + gdk_flush(); + } +} + + +static void +find_page_at_location (EvView *view, + gdouble x, + gdouble y, + gint *page, + gint *x_offset, + gint *y_offset) +{ + gint width, height; + + ev_page_cache_get_size (view->page_cache, + view->current_page, + view->scale, + &width, &height); + + x -= (view->border.left + view->spacing); + y -= (view->border.top + view->spacing); + + if ((x < 0) || (y < 0) || + (x >= width) || (y >= height)) { + *page = -1; + return; + } + *page = view->current_page; + *x_offset = (gint) x; + *y_offset = (gint) y; } +static EvLink * +get_link_at_location (EvView *view, + gdouble x, + gdouble y) +{ + gint page; + gint x_offset, y_offset; + GList *link_mapping; + + find_page_at_location (view, x, y, &page, &x_offset, &y_offset); + if (page == -1) + return NULL; + + link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page); + + return ev_link_mapping_find (link_mapping, x_offset /view->scale, y_offset /view->scale); +} + + static gboolean ev_view_motion_notify_event (GtkWidget *widget, GdkEventMotion *event) { - /* EvView *view = EV_VIEW (widget); */ - - return FALSE; + EvView *view = EV_VIEW (widget); + + if (view->pressed_button > 0) { + GdkRectangle selection; + + view->has_selection = TRUE; + selection.x = MIN (view->selection_start.x, event->x); + selection.y = MIN (view->selection_start.y, event->y); + selection.width = ABS (view->selection_start.x - event->x) + 1; + selection.height = ABS (view->selection_start.y - event->y) + 1; + view_rect_to_doc_rect (view, &selection, &view->selection); + + gtk_widget_queue_draw (widget); + } else if (view->document) { + EvLink *link; + + link = get_link_at_location (view, event->x, event->y); + if (link) { + char *msg; + + msg = status_message_from_link (view, link); + ev_view_set_status (view, msg); + ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK); + g_free (msg); + } else { + ev_view_set_status (view, NULL); + if (view->cursor == EV_VIEW_CURSOR_LINK) { + ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); + } + } + } + + return TRUE; +} + +/* FIXME: standardize this sometime */ +static void +go_to_link (EvView *view, EvLink *link) +{ + EvLinkType type; + const char *uri; + int page; + + type = ev_link_get_link_type (link); + + switch (type) { + case EV_LINK_TYPE_TITLE: + break; + case EV_LINK_TYPE_PAGE: + page = ev_link_get_page (link); + ev_page_cache_set_current_page (view->page_cache, page); + break; + case EV_LINK_TYPE_EXTERNAL_URI: + uri = ev_link_get_uri (link); + gnome_vfs_url_show (uri); + break; + } } + static gboolean ev_view_button_release_event (GtkWidget *widget, GdkEventButton *event) { - /* EvView *view = EV_VIEW (widget); */ + EvView *view = EV_VIEW (widget); + + view->pressed_button = -1; + + if (view->has_selection) { + ev_view_update_primary_selection (view); + } else if (view->document) { + EvLink *link; + + link = get_link_at_location (view, event->x, event->y); + if (link) { + go_to_link (view, link); + } + } return FALSE; } @@ -347,7 +1040,7 @@ set_scroll_adjustment (EvView *view, to_set = &view->hadjustment; else to_set = &view->vadjustment; - + if (*to_set != adjustment) { if (*to_set) { g_signal_handlers_disconnect_by_func (*to_set, @@ -378,14 +1071,181 @@ ev_view_set_scroll_adjustments (EvView *view, view_update_adjustments (view); } +static void +add_scroll_binding_keypad (GtkBindingSet *binding_set, + guint keyval, + GtkScrollType scroll, + gboolean horizontal) +{ + guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left; + + gtk_binding_entry_add_signal (binding_set, keyval, 0, + "scroll_view", 2, + GTK_TYPE_SCROLL_TYPE, scroll, + G_TYPE_BOOLEAN, horizontal); + gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0, + "scroll_view", 2, + GTK_TYPE_SCROLL_TYPE, scroll, + 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) +{ + GtkAdjustment *adjustment; + double value, increment; + gboolean first_page = FALSE; + gboolean last_page = FALSE; + + /* Assign values for increment and vertical adjustment */ + adjustment = view->vadjustment; + increment = adjustment->page_size * 0.75; + value = adjustment->value; + + /* Assign boolean for first and last page */ + if (view->current_page == 0) + first_page = TRUE; + if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1) + last_page = TRUE; + + switch (scroll) { + case EV_SCROLL_PAGE_BACKWARD: + /* Do not jump backwards if at the first page */ + if (value == (adjustment->lower) && first_page) { + /* Do nothing */ + /* At the top of a page, assign the upper bound limit of previous page */ + } else if (value == (adjustment->lower)) { + value = adjustment->upper - adjustment->page_size; + ev_page_cache_set_current_page (view->page_cache, view->current_page - 1); + /* Jump to the top */ + } else { + value = MAX (value - increment, adjustment->lower); + } + break; + case EV_SCROLL_PAGE_FORWARD: + /* Do not jump forward if at the last page */ + if (value == (adjustment->upper - adjustment->page_size) && last_page) { + /* Do nothing */ + /* At the bottom of a page, assign the lower bound limit of next page */ + } else if (value == (adjustment->upper - adjustment->page_size)) { + value = 0; + ev_page_cache_set_current_page (view->page_cache, view->current_page + 1); + /* Jump to the bottom */ + } else { + value = MIN (value + increment, adjustment->upper - adjustment->page_size); + } + break; + default: + break; + } + + gtk_adjustment_set_value (adjustment, value); +} + +static void +ev_view_scroll_view (EvView *view, + GtkScrollType scroll, + gboolean horizontal) +{ + if (scroll == GTK_SCROLL_PAGE_BACKWARD) { + ev_page_cache_prev_page (view->page_cache); + } else if (scroll == GTK_SCROLL_PAGE_FORWARD) { + ev_page_cache_next_page (view->page_cache); + } else if (scroll == EV_SCROLL_PAGE_BACKWARD || scroll == EV_SCROLL_PAGE_FORWARD) { + ev_view_jump (view, scroll); + } else { + GtkAdjustment *adjustment; + double value; + + if (horizontal) { + adjustment = view->hadjustment; + } else { + adjustment = view->vadjustment; + } + + value = adjustment->value; + + switch (scroll) { + case GTK_SCROLL_STEP_BACKWARD: + value -= adjustment->step_increment; + break; + case GTK_SCROLL_STEP_FORWARD: + value += adjustment->step_increment; + break; + default: + break; + } + + value = CLAMP (value, adjustment->lower, + adjustment->upper - adjustment->page_size); + + gtk_adjustment_set_value (adjustment, value); + } +} + +static void +ev_view_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + switch (prop_id) + { + /* Read only */ + case PROP_STATUS: + case PROP_FIND_STATUS: + break; + } +} + +static void +ev_view_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + EvView *view = EV_VIEW (object); + + switch (prop_id) + { + case PROP_STATUS: + g_value_set_string (value, view->status); + break; + case PROP_FIND_STATUS: + g_value_set_string (value, view->status); + break; + } +} + static void ev_view_class_init (EvViewClass *class) { GObjectClass *object_class = G_OBJECT_CLASS (class); GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class); GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class); + GtkBindingSet *binding_set; object_class->finalize = ev_view_finalize; + object_class->set_property = ev_view_set_property; + object_class->get_property = ev_view_get_property; widget_class->expose_event = ev_view_expose_event; widget_class->button_press_event = ev_view_button_press_event; @@ -395,11 +1255,10 @@ ev_view_class_init (EvViewClass *class) widget_class->size_allocate = ev_view_size_allocate; widget_class->realize = ev_view_realize; widget_class->unrealize = ev_view_unrealize; - widget_class->style_set = ev_view_style_set; - widget_class->state_changed = ev_view_state_changed; gtk_object_class->destroy = ev_view_destroy; - + class->set_scroll_adjustments = ev_view_set_scroll_adjustments; + class->scroll_view = ev_view_scroll_view; widget_class->set_scroll_adjustments_signal = g_signal_new ("set-scroll-adjustments", G_OBJECT_CLASS_TYPE (object_class), @@ -410,24 +1269,277 @@ ev_view_class_init (EvViewClass *class) G_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT); + + g_signal_new ("scroll_view", + G_TYPE_FROM_CLASS (object_class), + G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, + G_STRUCT_OFFSET (EvViewClass, scroll_view), + NULL, NULL, + ev_marshal_VOID__ENUM_BOOLEAN, + G_TYPE_NONE, 2, + GTK_TYPE_SCROLL_TYPE, + G_TYPE_BOOLEAN); + + g_object_class_install_property (object_class, + PROP_STATUS, + g_param_spec_string ("status", + "Status Message", + "The status message", + NULL, + G_PARAM_READABLE)); + + g_object_class_install_property (object_class, + PROP_FIND_STATUS, + g_param_spec_string ("find-status", + "Find Status Message", + "The find status message", + NULL, + G_PARAM_READABLE)); + + binding_set = gtk_binding_set_by_class (class); + + 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_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_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); +} + +void +ev_view_set_spacing (EvView *view, + int spacing) +{ + g_return_if_fail (EV_IS_VIEW (view)); + + view->spacing = spacing; + + if (view->document) { + gtk_widget_queue_resize (GTK_WIDGET (view)); + } } static void ev_view_init (EvView *view) { - static const GdkColor white = { 0, 0xffff, 0xffff, 0xffff }; - - gtk_widget_modify_bg (GTK_WIDGET (view), GTK_STATE_NORMAL, &white); + GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS); + + view->spacing = 0; + view->scale = 1.0; + view->current_page = 0; + view->pressed_button = -1; + view->cursor = EV_VIEW_CURSOR_NORMAL; + view->show_border = TRUE; +} + +static void +update_find_status_message (EvView *view) +{ + char *message; + +// g_mutex_lock (EV_DOC_MUTEX); + 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), + 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 + contains plural cases. */ + message = g_strdup_printf (ngettext ("%d found on this page", + "%d found on this page", + results), + results); + } else { + double percent; + + g_mutex_lock (EV_DOC_MUTEX); + percent = ev_document_find_get_progress + (EV_DOCUMENT_FIND (view->document)); + g_mutex_unlock (EV_DOC_MUTEX); + if (percent >= (1.0 - 1e-10)) { + message = g_strdup (_("Not found")); + } else { + message = g_strdup_printf (_("%3d%% remaining to search"), + (int) ((1.0 - percent) * 100)); + } + + } +// g_mutex_unlock (EV_DOC_MUTEX); + + ev_view_set_find_status (view, message); +// g_free (message); +} + +#define MARGIN 5 + +static void +ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect) +{ + GtkWidget *widget = GTK_WIDGET (view); + GtkAdjustment *adjustment; + int value; + + adjustment = view->vadjustment; + + if (rect->y < adjustment->value) { + value = MAX (adjustment->lower, rect->y - MARGIN); + gtk_adjustment_set_value (view->vadjustment, value); + } else if (rect->y + rect->height > + adjustment->value + widget->allocation.height) { + value = MIN (adjustment->upper, rect->y + rect->height - + widget->allocation.height + MARGIN); + gtk_adjustment_set_value (view->vadjustment, value); + } + + adjustment = view->hadjustment; + + if (rect->x < adjustment->value) { + value = MAX (adjustment->lower, rect->x - MARGIN); + gtk_adjustment_set_value (view->hadjustment, value); + } else if (rect->x + rect->height > + adjustment->value + widget->allocation.width) { + value = MIN (adjustment->upper, rect->x + rect->width - + widget->allocation.width + MARGIN); + gtk_adjustment_set_value (view->hadjustment, value); + } +} + +static void +jump_to_find_result (EvView *view) +{ + EvDocumentFind *find = EV_DOCUMENT_FIND (view->document); + EvRectangle rect; + GdkRectangle view_rect; + int n_results; + + g_mutex_lock (EV_DOC_MUTEX); + 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->current_page, view->find_result, &rect); + g_mutex_unlock (EV_DOC_MUTEX); + + doc_rect_to_view_rect (view, &rect, &view_rect); + ensure_rectangle_is_visible (view, &view_rect); + } } -/*** Public API ***/ - +static void +jump_to_find_page (EvView *view) +{ + int n_pages, i; + + n_pages = ev_page_cache_get_n_pages (view->page_cache); + + for (i = 0; i < n_pages; i++) { + int has_results; + int page; + + page = i + view->find_page; + if (page >= n_pages) { + page = page - n_pages; + } + + // g_mutex_lock (EV_DOC_MUTEX); + has_results = ev_document_find_page_has_results + (EV_DOCUMENT_FIND (view->document), page); + if (has_results == -1) { + view->find_page = page; + break; + } else if (has_results == 1) { + ev_page_cache_set_current_page (view->page_cache, page); + jump_to_find_result (view); + break; + } + } +} + +static void +find_changed_cb (EvDocument *document, int page, EvView *view) +{ + jump_to_find_page (view); + jump_to_find_result (view); + update_find_status_message (view); + + if (view->current_page == page) + gtk_widget_queue_draw (GTK_WIDGET (view)); +} +/*** Public API ***/ + GtkWidget* ev_view_new (void) { return g_object_new (EV_TYPE_VIEW, NULL); } +static void +job_finished_cb (EvPixbufCache *pixbuf_cache, + EvView *view) +{ + gtk_widget_queue_draw (GTK_WIDGET (view)); +} + + +static void +page_changed_cb (EvPageCache *page_cache, + int new_page, + EvView *view) +{ + int old_page = view->current_page; + int old_width, old_height; + int new_width, new_height; + + if (old_page == new_page) + return; + + ev_page_cache_get_size (page_cache, + old_page, + view->scale, + &old_width, &old_height); + + view->current_page = new_page; + view->has_selection = FALSE; + + compute_zoom_factor (view); + + ev_page_cache_get_size (page_cache, + new_page, + view->scale, + &new_width, &new_height); + + compute_border (view, new_width, new_height, &(view->border)); + + ev_pixbuf_cache_set_page_range (view->pixbuf_cache, + view->current_page, + view->current_page, + view->scale); + + if (new_width != old_width || new_height != old_height) + gtk_widget_queue_resize (GTK_WIDGET (view)); + else + gtk_widget_queue_draw (GTK_WIDGET (view)); + + gtk_adjustment_set_value (view->vadjustment, + view->vadjustment->lower); + + if (EV_IS_DOCUMENT_FIND (view->document)) { + view->find_page = new_page; + view->find_result = 0; + update_find_status_message (view); + } +} + void ev_view_set_document (EvView *view, EvDocument *document) @@ -435,17 +1547,186 @@ ev_view_set_document (EvView *view, g_return_if_fail (EV_IS_VIEW (view)); if (document != view->document) { - if (view->document) + if (view->document) { + g_signal_handlers_disconnect_by_func (view->document, + find_changed_cb, + view); g_object_unref (view->document); + view->page_cache = NULL; + + } view->document = document; + view->find_page = 0; + view->find_result = 0; - if (view->document) + if (view->document) { g_object_ref (view->document); + if (EV_IS_DOCUMENT_FIND (view->document)) { + g_signal_connect (view->document, + "find_changed", + G_CALLBACK (find_changed_cb), + view); + } + view->page_cache = ev_document_get_page_cache (view->document); + g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view); + view->pixbuf_cache = ev_pixbuf_cache_new (view->document); + g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view); + } + + gtk_widget_queue_resize (GTK_WIDGET (view)); + } +} + +static void +ev_view_zoom (EvView *view, + double factor, + gboolean relative) +{ + double scale; + + if (relative) + scale = view->scale * factor; + else + scale = factor; + + 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) +{ + 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_set_size (EvView *view, + int width, + int height) +{ + if (!view->document) { + return; + } - if (GTK_WIDGET_REALIZED (view)) - ev_document_set_target (view->document, view->bin_window); - + if (width != view->width || height != view->height) { + view->width = width; + view->height = height; gtk_widget_queue_resize (GTK_WIDGET (view)); } } + +const char * +ev_view_get_status (EvView *view) +{ + g_return_val_if_fail (EV_IS_VIEW (view), NULL); + + return view->status; +} + +const char * +ev_view_get_find_status (EvView *view) +{ + g_return_val_if_fail (EV_IS_VIEW (view), NULL); + + 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) +{ + EvPageCache *page_cache; + int n_results, n_pages; + EvDocumentFind *find = EV_DOCUMENT_FIND (view->document); + + page_cache = ev_document_get_page_cache (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); + + n_pages = ev_page_cache_get_n_pages (page_cache); + + view->find_result++; + + if (view->find_result >= n_results) { + view->find_result = 0; + view->find_page++; + + if (view->find_page >= n_pages) { + view->find_page = 0; + } + + jump_to_find_page (view); + } else { + jump_to_find_result (view); + gtk_widget_queue_draw (GTK_WIDGET (view)); + } +} + +void +ev_view_find_previous (EvView *view) +{ + int n_results, n_pages; + EvDocumentFind *find = EV_DOCUMENT_FIND (view->document); + EvPageCache *page_cache; + + page_cache = ev_document_get_page_cache (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); + + n_pages = ev_page_cache_get_n_pages (page_cache); + + view->find_result--; + + if (view->find_result < 0) { + view->find_result = 0; + view->find_page--; + + if (view->find_page < 0) { + view->find_page = n_pages - 1; + } + + jump_to_find_page (view); + } else { + jump_to_find_result (view); + gtk_widget_queue_draw (GTK_WIDGET (view)); + } +} +void +ev_view_hide_cursor (EvView *view) +{ + ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN); +} + +void +ev_view_show_cursor (EvView *view) +{ + ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); +}