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using Gee;
using Gdk;
using Gtk;
using Xmpp;
using Dino.Entities;
namespace Dino.Ui {
public class FilePreviewWidget : Box {
private ScalingImage image;
FileDefaultWidget file_default_widget;
FileDefaultWidgetController file_default_widget_controller;
public FilePreviewWidget() {
this.halign = Align.START;
this.add_css_class("file-preview-widget");
}
public async void load_from_thumbnail(FileTransfer file_transfer, StreamInteractor stream_interactor, int MAX_WIDTH=600, int MAX_HEIGHT=300) throws GLib.Error {
Thread<ScalingImage?> thread = new Thread<ScalingImage?> (null, () => {
ScalingImage image = new ScalingImage() { halign=Align.START, visible = true, max_width = MAX_WIDTH, max_height = MAX_HEIGHT };
Gdk.Pixbuf? pixbuf = null;
foreach (Xep.JingleContentThumbnails.Thumbnail thumbnail in file_transfer.thumbnails) {
pixbuf = ImageFileMetadataProvider.parse_thumbnail(thumbnail);
if (pixbuf != null) {
break;
}
}
if (pixbuf == null) {
warning("Can't load thumbnails of file %s", file_transfer.file_name);
Idle.add(load_from_thumbnail.callback);
throw new Error(-1, 0, "Error loading preview image");
}
// TODO: should this be executed? If yes, before or after scaling
pixbuf = pixbuf.apply_embedded_orientation();
if (file_transfer.width > 0 && file_transfer.height > 0) {
pixbuf = pixbuf.scale_simple(file_transfer.width, file_transfer.height, InterpType.BILINEAR);
} else {
warning("Preview: Not scaling image, width: %d, height: %d\n", file_transfer.width, file_transfer.height);
}
if (pixbuf == null) {
warning("Can't scale thumbnail %s", file_transfer.file_name);
throw new Error(-1, 0, "Error scaling preview image");
}
image.load(pixbuf);
Idle.add(load_from_thumbnail.callback);
return image;
});
yield;
this.image = thread.join();
file_default_widget = new FileDefaultWidget() { valign=Align.END, vexpand=false, visible=false };
file_default_widget.image_stack.visible = false;
file_default_widget_controller = new FileDefaultWidgetController(file_default_widget);
file_default_widget_controller.set_file_transfer(file_transfer, stream_interactor);
Overlay overlay = new Overlay();
overlay.set_child(image);
overlay.add_overlay(file_default_widget);
overlay.set_measure_overlay(image, true);
overlay.set_clip_overlay(file_default_widget, true);
EventControllerMotion this_motion_events = new EventControllerMotion();
this.add_controller(this_motion_events);
this_motion_events.enter.connect(() => {
file_default_widget.visible = true;
});
this_motion_events.leave.connect(() => {
if (file_default_widget.file_menu.popover != null && file_default_widget.file_menu.popover.visible) return;
file_default_widget.visible = false;
});
GestureClick gesture_click_controller = new GestureClick();
gesture_click_controller.set_button(1); // listen for left clicks
this.add_controller(gesture_click_controller);
gesture_click_controller.pressed.connect((n_press, x, y) => {
// Check whether the click was inside the file menu. Otherwise, open the file.
this.file_default_widget.clicked();
});
this.append(overlay);
}
}
}
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