blob: 62038120ac636742ce3288af6dab4316e1d42479 [file] [log] [blame]
/*
* Copyright (C) 2008 Carlos Garcia Campos <carlosgc@gnome.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include <gtk/gtk.h>
#include "layers.h"
enum
{
LAYERS_TITLE_COLUMN,
LAYERS_VISIBILITY_COLUMN,
LAYERS_ENABLE_COLUMN,
LAYERS_SHOWTOGGLE_COLUMN,
LAYERS_RB_GROUP_COLUMN,
LAYERS_LAYER_COLUMN,
N_COLUMNS
};
typedef struct
{
PopplerDocument *doc;
guint page;
GtkWidget *treeview;
GtkWidget *darea;
cairo_surface_t *surface;
} PgdLayersDemo;
static void pgd_layers_free(PgdLayersDemo *demo)
{
if (!demo)
return;
if (demo->doc) {
g_object_unref(demo->doc);
demo->doc = NULL;
}
if (demo->surface) {
cairo_surface_destroy(demo->surface);
demo->surface = NULL;
}
g_free(demo);
}
static void build_tree(PopplerDocument *document, GtkTreeModel *model, GtkTreeIter *parent, PopplerLayersIter *iter)
{
do {
GtkTreeIter tree_iter;
PopplerLayersIter *child;
PopplerLayer *layer;
gboolean visible;
gchar *markup;
gint rb_group = 0;
layer = poppler_layers_iter_get_layer(iter);
if (layer) {
markup = g_markup_escape_text(poppler_layer_get_title(layer), -1);
visible = poppler_layer_is_visible(layer);
rb_group = poppler_layer_get_radio_button_group_id(layer);
} else {
gchar *title;
title = poppler_layers_iter_get_title(iter);
markup = g_markup_escape_text(title, -1);
g_free(title);
visible = FALSE;
layer = NULL;
}
gtk_tree_store_append(GTK_TREE_STORE(model), &tree_iter, parent);
gtk_tree_store_set(GTK_TREE_STORE(model), &tree_iter, LAYERS_TITLE_COLUMN, markup, LAYERS_VISIBILITY_COLUMN, visible, LAYERS_ENABLE_COLUMN, TRUE, /* FIXME */
LAYERS_SHOWTOGGLE_COLUMN, (layer != NULL), LAYERS_RB_GROUP_COLUMN, rb_group, LAYERS_LAYER_COLUMN, layer, -1);
if (layer)
g_object_unref(layer);
g_free(markup);
child = poppler_layers_iter_get_child(iter);
if (child)
build_tree(document, model, &tree_iter, child);
poppler_layers_iter_free(child);
} while (poppler_layers_iter_next(iter));
}
GtkTreeModel *pgd_layers_create_model(PopplerDocument *document)
{
GtkTreeModel *model;
PopplerLayersIter *iter;
iter = poppler_layers_iter_new(document);
if (iter) {
model = GTK_TREE_MODEL(gtk_tree_store_new(N_COLUMNS, G_TYPE_STRING, G_TYPE_BOOLEAN, G_TYPE_BOOLEAN, G_TYPE_BOOLEAN, G_TYPE_INT, G_TYPE_OBJECT));
build_tree(document, model, NULL, iter);
poppler_layers_iter_free(iter);
} else {
GtkTreeIter tree_iter;
gchar *markup;
model = GTK_TREE_MODEL(gtk_list_store_new(1, G_TYPE_STRING));
gtk_list_store_append(GTK_LIST_STORE(model), &tree_iter);
markup = g_strdup_printf("<span size=\"larger\" style=\"italic\">%s</span>", "The document doesn't contain layers");
gtk_list_store_set(GTK_LIST_STORE(model), &tree_iter, 0, markup, -1);
g_free(markup);
}
return model;
}
static cairo_surface_t *pgd_layers_render_page(PgdLayersDemo *demo)
{
cairo_t *cr;
PopplerPage *page;
gdouble width, height;
cairo_surface_t *surface = NULL;
page = poppler_document_get_page(demo->doc, demo->page);
if (!page)
return NULL;
poppler_page_get_size(page, &width, &height);
gtk_widget_set_size_request(demo->darea, width, height);
surface = cairo_image_surface_create(CAIRO_FORMAT_RGB24, width, height);
cr = cairo_create(surface);
cairo_save(cr);
cairo_set_source_rgb(cr, 1, 1, 1);
cairo_rectangle(cr, 0, 0, width, height);
cairo_fill(cr);
cairo_restore(cr);
cairo_save(cr);
poppler_page_render(page, cr);
cairo_restore(cr);
cairo_destroy(cr);
g_object_unref(page);
return surface;
}
static gboolean pgd_layers_viewer_drawing_area_draw(GtkWidget *area, cairo_t *cr, PgdLayersDemo *demo)
{
if (!demo->surface) {
demo->surface = pgd_layers_render_page(demo);
if (!demo->surface)
return FALSE;
}
cairo_set_source_surface(cr, demo->surface, 0, 0);
cairo_paint(cr);
return TRUE;
}
static gboolean pgd_layers_viewer_redraw(PgdLayersDemo *demo)
{
cairo_surface_destroy(demo->surface);
demo->surface = NULL;
gtk_widget_queue_draw(demo->darea);
return FALSE;
}
static void pgd_layers_viewer_queue_redraw(PgdLayersDemo *demo)
{
g_idle_add((GSourceFunc)pgd_layers_viewer_redraw, demo);
}
static void pgd_layers_page_selector_value_changed(GtkSpinButton *spinbutton, PgdLayersDemo *demo)
{
demo->page = (gint)gtk_spin_button_get_value(spinbutton) - 1;
pgd_layers_viewer_queue_redraw(demo);
}
static GtkWidget *pgd_layers_create_viewer(PgdLayersDemo *demo)
{
GtkWidget *vbox, *hbox;
GtkWidget *label;
GtkWidget *swindow;
GtkWidget *page_selector;
guint n_pages;
gchar *str;
vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 6);
hbox = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 6);
label = gtk_label_new("Page:");
gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, TRUE, 0);
gtk_widget_show(label);
n_pages = poppler_document_get_n_pages(demo->doc);
page_selector = gtk_spin_button_new_with_range(1, n_pages, 1);
g_signal_connect(G_OBJECT(page_selector), "value-changed", G_CALLBACK(pgd_layers_page_selector_value_changed), (gpointer)demo);
gtk_box_pack_start(GTK_BOX(hbox), page_selector, FALSE, TRUE, 0);
gtk_widget_show(page_selector);
str = g_strdup_printf("of %d", n_pages);
label = gtk_label_new(str);
gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, TRUE, 0);
gtk_widget_show(label);
g_free(str);
gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
gtk_widget_show(hbox);
demo->darea = gtk_drawing_area_new();
g_signal_connect(G_OBJECT(demo->darea), "draw", G_CALLBACK(pgd_layers_viewer_drawing_area_draw), (gpointer)demo);
swindow = gtk_scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(swindow), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
#if GTK_CHECK_VERSION(3, 7, 8)
gtk_container_add(GTK_CONTAINER(swindow), demo->darea);
#else
gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(swindow), demo->darea);
#endif
gtk_widget_show(demo->darea);
gtk_box_pack_start(GTK_BOX(vbox), swindow, TRUE, TRUE, 0);
gtk_widget_show(swindow);
return vbox;
}
static gboolean update_kids(GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter, GtkTreeIter *parent)
{
if (gtk_tree_store_is_ancestor(GTK_TREE_STORE(model), parent, iter)) {
gboolean visible;
gtk_tree_model_get(model, parent, LAYERS_VISIBILITY_COLUMN, &visible, -1);
gtk_tree_store_set(GTK_TREE_STORE(model), iter, LAYERS_ENABLE_COLUMN, visible, -1);
}
return FALSE;
}
static gboolean clear_rb_group(GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter, gint *rb_group)
{
gint group;
gtk_tree_model_get(model, iter, LAYERS_RB_GROUP_COLUMN, &group, -1);
if (group == *rb_group) {
gtk_tree_store_set(GTK_TREE_STORE(model), iter, LAYERS_VISIBILITY_COLUMN, FALSE, -1);
}
return FALSE;
}
static void pgd_layers_visibility_changed(GtkCellRendererToggle *cell, gchar *path_str, PgdLayersDemo *demo)
{
GtkTreeModel *model;
GtkTreePath *path;
GtkTreeIter iter;
gboolean visible;
PopplerLayer *layer;
model = gtk_tree_view_get_model(GTK_TREE_VIEW(demo->treeview));
path = gtk_tree_path_new_from_string(path_str);
gtk_tree_model_get_iter(model, &iter, path);
gtk_tree_model_get(model, &iter, LAYERS_VISIBILITY_COLUMN, &visible, LAYERS_LAYER_COLUMN, &layer, -1);
visible = !visible;
visible ? poppler_layer_show(layer) : poppler_layer_hide(layer);
if (visible) {
gint rb_group;
rb_group = poppler_layer_get_radio_button_group_id(layer);
if (rb_group) {
gtk_tree_model_foreach(model, (GtkTreeModelForeachFunc)clear_rb_group, &rb_group);
}
}
gtk_tree_store_set(GTK_TREE_STORE(model), &iter, LAYERS_VISIBILITY_COLUMN, visible, -1);
if (poppler_layer_is_parent(layer)) {
gtk_tree_model_foreach(model, (GtkTreeModelForeachFunc)update_kids, &iter);
}
pgd_layers_viewer_queue_redraw(demo);
gtk_tree_path_free(path);
g_object_unref(layer);
}
GtkWidget *pgd_layers_create_widget(PopplerDocument *document)
{
PgdLayersDemo *demo;
GtkWidget *swindow;
GtkWidget *treeview;
GtkTreeModel *model;
GtkCellRenderer *renderer;
GtkWidget *hpaned, *viewer;
demo = g_new0(PgdLayersDemo, 1);
demo->doc = g_object_ref(document);
hpaned = gtk_paned_new(GTK_ORIENTATION_HORIZONTAL);
viewer = pgd_layers_create_viewer(demo);
swindow = gtk_scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(swindow), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
model = pgd_layers_create_model(document);
treeview = gtk_tree_view_new_with_model(model);
demo->treeview = treeview;
g_object_unref(model);
renderer = gtk_cell_renderer_text_new();
gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(treeview), 0, "Layer", renderer, "markup", LAYERS_TITLE_COLUMN, NULL);
g_object_set(G_OBJECT(renderer), "ellipsize", PANGO_ELLIPSIZE_END, NULL);
g_object_set(G_OBJECT(gtk_tree_view_get_column(GTK_TREE_VIEW(treeview), 0)), "expand", TRUE, NULL);
if (GTK_IS_TREE_STORE(model)) {
renderer = gtk_cell_renderer_toggle_new();
gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(treeview), 1, "Show/Hide", renderer, "active", LAYERS_VISIBILITY_COLUMN, "activatable", LAYERS_ENABLE_COLUMN, "visible", LAYERS_SHOWTOGGLE_COLUMN, NULL);
g_signal_connect(renderer, "toggled", G_CALLBACK(pgd_layers_visibility_changed), (gpointer)demo);
gtk_tree_view_column_set_clickable(gtk_tree_view_get_column(GTK_TREE_VIEW(treeview), 1), TRUE);
}
gtk_tree_selection_set_mode(gtk_tree_view_get_selection(GTK_TREE_VIEW(treeview)), GTK_SELECTION_NONE);
gtk_container_add(GTK_CONTAINER(swindow), treeview);
gtk_widget_show(treeview);
gtk_paned_add1(GTK_PANED(hpaned), swindow);
gtk_widget_show(swindow);
gtk_paned_add2(GTK_PANED(hpaned), viewer);
gtk_widget_show(viewer);
gtk_paned_set_position(GTK_PANED(hpaned), 150);
g_object_weak_ref(G_OBJECT(hpaned), (GWeakNotify)pgd_layers_free, (gpointer)demo);
return hpaned;
}