74 lines
2.3 KiB
Vala
74 lines
2.3 KiB
Vala
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using Adw;
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using Gtk;
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public class MessageListView : Adw.Bin
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{
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private Adw.ToolbarView container;
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private MessageDrawingArea message_drawing_area = new MessageDrawingArea();
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private ScrolledWindow scrolled_window = new ScrolledWindow();
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public MessageListView(MessageListModel model) {
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container = new Adw.ToolbarView();
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set_child(container);
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scrolled_window.set_child(message_drawing_area);
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scrolled_window.add_css_class("message-list-scroller");
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container.set_content(scrolled_window);
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var header_bar = new Adw.HeaderBar();
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header_bar.set_title_widget(new Label("Messages"));
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container.add_top_bar(header_bar);
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}
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}
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private class MessageDrawingArea : Widget {
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public MessageDrawingArea() {
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}
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public override SizeRequestMode get_request_mode() {
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return SizeRequestMode.HEIGHT_FOR_WIDTH;
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}
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public override void measure(Orientation orientation, int for_size, out int minimum, out int natural, out int minimum_baseline, out int natural_baseline) {
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GLib.message("Measure orientation: %s, for_size: %d", orientation.to_string(), for_size);
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if (orientation == Orientation.HORIZONTAL) {
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// Horizontal, so we take up the full width provided
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minimum = 0;
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natural = for_size;
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} else {
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GLib.message("Vertical measure for width: %d", for_size);
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minimum = 1500;
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natural = 1500;
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}
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minimum_baseline = -1;
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natural_baseline = -1;
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}
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public override void snapshot(Snapshot snapshot) {
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var width = get_width();
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var height = get_height();
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GLib.message("Snapshot width: %d, height: %d", width, height);
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var rect = Graphene.Rect().init(0, 0, width, height);
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snapshot.append_color({1.0f, 0.0f, 0.0f, 1.0f}, rect);
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// Create a text layout
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var layout = create_pango_layout("Hello World!");
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layout.set_width(width * Pango.SCALE);
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// Set text attributes
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var font_desc = Pango.FontDescription.from_string("Sans 14");
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layout.set_font_description(font_desc);
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// Draw the text in white
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snapshot.append_layout(layout, Gdk.RGBA() { red = 1.0f, green = 1.0f, blue = 1.0f, alpha = 1.0f });
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}
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}
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