implement document resize with menu and dialog

src/node_dialog_resize.cpp

@@ -0,0 +1,54 @@
+#include "pch.h"
+#include "log.h"
+#include "node_dialog_resize.h"
+#include "canvas.h"
+#include "node_image_texture.h"
+#include "app.h"
+#include <array>
+
+Node* NodeDialogResize::clone_instantiate() const
+{
+    return new NodeDialogResize();
+}
+
+void NodeDialogResize::clone_finalize(Node* dest) const
+{
+    NodeDialogResize* n = static_cast<NodeDialogResize*>(dest);
+    n->init_controls();
+}
+
+void NodeDialogResize::init()
+{
+    auto tpl = static_cast<const NodeBorder*>(init_template("dialog-resize"));
+    m_color = tpl->m_color;
+    m_border_color = tpl->m_border_color;;
+    m_thinkness = tpl->m_thinkness;;
+    init_controls();
+}
+
+void NodeDialogResize::init_controls()
+{
+    btn_ok = find<NodeButton>("btn-ok");
+    btn_cancel = find<NodeButton>("btn-cancel");
+    combo = find<NodeComboBox>("resolution");
+    text = find<NodeText>("current-res");
+    resolution = ui::Canvas::I->m_width;
+    static char txt[128];
+    sprintf(txt, "Current: %dpx", resolution);
+    text->set_text(txt);
+    btn_cancel->on_click = [this](Node*) {
+        destroy();
+    };
+}
+
+void NodeDialogResize::loaded()
+{
+//    ui::Image thumb = ui::Canvas::I->thumbnail_read(data_path);
+//    auto image_tex = find<NodeImageTexture>("thumb-tex");
+//    image_tex->tex.create(thumb);
+}
+
+int NodeDialogResize::get_resolution()
+{
+    return combo ? res_map[combo->m_current_index] : 512;
+}