/* * Copyright (C) 2008 Carlos Garcia Campos * * 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 #include "images.h" enum { IMAGES_ID_COLUMN, IMAGES_X1_COLUMN, IMAGES_Y1_COLUMN, IMAGES_X2_COLUMN, IMAGES_Y2_COLUMN, N_COLUMNS }; typedef struct { PopplerDocument *doc; GtkListStore *model; GtkWidget *timer_label; GtkWidget *image_view; gint page; } PgdImagesDemo; static void pgd_images_free(PgdImagesDemo *demo) { if (!demo) return; if (demo->doc) { g_object_unref(demo->doc); demo->doc = NULL; } if (demo->model) { g_object_unref(demo->model); demo->model = NULL; } g_free(demo); } static gboolean pgd_image_view_drawing_area_draw(GtkWidget *area, cairo_t *cr, GtkWidget *image_view) { cairo_surface_t *image; image = g_object_get_data(G_OBJECT(image_view), "image-surface"); if (!image) return FALSE; gtk_widget_set_size_request(area, cairo_image_surface_get_width(image), cairo_image_surface_get_height(image)); cairo_set_source_surface(cr, image, 0, 0); cairo_paint(cr); return TRUE; } static GtkWidget *pgd_image_view_new() { GtkWidget *swindow; GtkWidget *darea; swindow = gtk_scrolled_window_new(NULL, NULL); darea = gtk_drawing_area_new(); g_signal_connect(G_OBJECT(darea), "draw", G_CALLBACK(pgd_image_view_drawing_area_draw), (gpointer)swindow); 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), darea); #else gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(swindow), darea); #endif gtk_widget_show(darea); return swindow; } static void pgd_image_view_set_image(GtkWidget *image_view, cairo_surface_t *image) { g_object_set_data_full(G_OBJECT(image_view), "image-surface", image, (GDestroyNotify)cairo_surface_destroy); gtk_widget_queue_draw(image_view); } static void pgd_images_get_images(GtkWidget *button, PgdImagesDemo *demo) { PopplerPage *page; GList *mapping, *l; gint n_images; GTimer *timer; gtk_list_store_clear(demo->model); pgd_image_view_set_image(demo->image_view, NULL); page = poppler_document_get_page(demo->doc, demo->page); if (!page) return; timer = g_timer_new(); mapping = poppler_page_get_image_mapping(page); g_timer_stop(timer); n_images = g_list_length(mapping); if (n_images > 0) { gchar *str; str = g_strdup_printf("%d images found in %.4f seconds", n_images, g_timer_elapsed(timer, NULL)); gtk_label_set_markup(GTK_LABEL(demo->timer_label), str); g_free(str); } else { gtk_label_set_markup(GTK_LABEL(demo->timer_label), "No images found"); } g_timer_destroy(timer); for (l = mapping; l; l = g_list_next(l)) { PopplerImageMapping *imapping; GtkTreeIter iter; gchar *x1, *y1, *x2, *y2; imapping = (PopplerImageMapping *)l->data; x1 = g_strdup_printf("%.2f", imapping->area.x1); y1 = g_strdup_printf("%.2f", imapping->area.y1); x2 = g_strdup_printf("%.2f", imapping->area.x2); y2 = g_strdup_printf("%.2f", imapping->area.y2); gtk_list_store_append(demo->model, &iter); gtk_list_store_set(demo->model, &iter, IMAGES_ID_COLUMN, imapping->image_id, IMAGES_X1_COLUMN, x1, IMAGES_Y1_COLUMN, y1, IMAGES_X2_COLUMN, x2, IMAGES_Y2_COLUMN, y2, -1); g_free(x1); g_free(y1); g_free(x2); g_free(y2); } poppler_page_free_image_mapping(mapping); g_object_unref(page); } static void pgd_images_page_selector_value_changed(GtkSpinButton *spinbutton, PgdImagesDemo *demo) { demo->page = (gint)gtk_spin_button_get_value(spinbutton) - 1; } static void pgd_images_selection_changed(GtkTreeSelection *treeselection, PgdImagesDemo *demo) { GtkTreeModel *model; GtkTreeIter iter; if (gtk_tree_selection_get_selected(treeselection, &model, &iter)) { PopplerPage *page; gint image_id; gtk_tree_model_get(model, &iter, IMAGES_ID_COLUMN, &image_id, -1); page = poppler_document_get_page(demo->doc, demo->page); pgd_image_view_set_image(demo->image_view, poppler_page_get_image(page, image_id)); g_object_unref(page); } } GtkWidget *pgd_images_create_widget(PopplerDocument *document) { PgdImagesDemo *demo; GtkWidget *label; GtkWidget *vbox; GtkWidget *hbox, *page_selector; GtkWidget *button; GtkWidget *hpaned; GtkWidget *swindow, *treeview; GtkTreeSelection *selection; GtkCellRenderer *renderer; gchar *str; gint n_pages; demo = g_new0(PgdImagesDemo, 1); demo->doc = g_object_ref(document); n_pages = poppler_document_get_n_pages(document); vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 12); 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); page_selector = gtk_spin_button_new_with_range(1, n_pages, 1); g_signal_connect(G_OBJECT(page_selector), "value-changed", G_CALLBACK(pgd_images_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); button = gtk_button_new_with_label("Get Images"); g_signal_connect(G_OBJECT(button), "clicked", G_CALLBACK(pgd_images_get_images), (gpointer)demo); gtk_box_pack_end(GTK_BOX(hbox), button, FALSE, FALSE, 0); gtk_widget_show(button); gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0); gtk_widget_show(hbox); demo->timer_label = gtk_label_new(NULL); gtk_label_set_markup(GTK_LABEL(demo->timer_label), "No images found"); g_object_set(G_OBJECT(demo->timer_label), "xalign", 1.0, NULL); gtk_box_pack_start(GTK_BOX(vbox), demo->timer_label, FALSE, TRUE, 0); gtk_widget_show(demo->timer_label); hpaned = gtk_paned_new(GTK_ORIENTATION_HORIZONTAL); demo->image_view = pgd_image_view_new(); swindow = gtk_scrolled_window_new(NULL, NULL); gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(swindow), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); demo->model = gtk_list_store_new(N_COLUMNS, G_TYPE_INT, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING); treeview = gtk_tree_view_new_with_model(GTK_TREE_MODEL(demo->model)); renderer = gtk_cell_renderer_text_new(); renderer = gtk_cell_renderer_text_new(); gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(treeview), 0, "Image", renderer, "text", IMAGES_ID_COLUMN, NULL); renderer = gtk_cell_renderer_text_new(); gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(treeview), 1, "X1", renderer, "text", IMAGES_X1_COLUMN, NULL); renderer = gtk_cell_renderer_text_new(); gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(treeview), 2, "Y1", renderer, "text", IMAGES_Y1_COLUMN, NULL); renderer = gtk_cell_renderer_text_new(); gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(treeview), 3, "X2", renderer, "text", IMAGES_X2_COLUMN, NULL); renderer = gtk_cell_renderer_text_new(); gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(treeview), 4, "Y2", renderer, "text", IMAGES_Y2_COLUMN, NULL); selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(treeview)); g_signal_connect(G_OBJECT(selection), "changed", G_CALLBACK(pgd_images_selection_changed), (gpointer)demo); 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), demo->image_view); gtk_widget_show(demo->image_view); gtk_paned_set_position(GTK_PANED(hpaned), 300); gtk_box_pack_start(GTK_BOX(vbox), hpaned, TRUE, TRUE, 0); gtk_widget_show(hpaned); g_object_weak_ref(G_OBJECT(vbox), (GWeakNotify)pgd_images_free, demo); return vbox; }