From b529b4a3e6c239ba4eef8b30bebc6b1ddaca26eb Mon Sep 17 00:00:00 2001
From: Andreas Kling <awesomekling@gmail.com>
Date: Tue, 25 Jun 2019 20:27:32 +0200
Subject: [PATCH] PaintBrush: Add support for opening files.

Obviously this only supports whatever PNG files that load_png() can decode
at the moment.
---
 Applications/PaintBrush/PaintableWidget.cpp |  6 ++++++
 Applications/PaintBrush/PaintableWidget.h   |  2 ++
 Applications/PaintBrush/main.cpp            | 16 ++++++++++++++++
 3 files changed, 24 insertions(+)

diff --git a/Applications/PaintBrush/PaintableWidget.cpp b/Applications/PaintBrush/PaintableWidget.cpp
index 900c03f1ca..fee2171fcb 100644
--- a/Applications/PaintBrush/PaintableWidget.cpp
+++ b/Applications/PaintBrush/PaintableWidget.cpp
@@ -90,3 +90,9 @@ void PaintableWidget::set_secondary_color(Color color)
     if (on_secondary_color_change)
         on_secondary_color_change(color);
 }
+
+void PaintableWidget::set_bitmap(const GraphicsBitmap& bitmap)
+{
+    m_bitmap = bitmap;
+    update();
+}
diff --git a/Applications/PaintBrush/PaintableWidget.h b/Applications/PaintBrush/PaintableWidget.h
index 26b5a70d91..1ee6985bba 100644
--- a/Applications/PaintBrush/PaintableWidget.h
+++ b/Applications/PaintBrush/PaintableWidget.h
@@ -23,6 +23,8 @@ public:
 
     Color color_for(const GMouseEvent&);
 
+    void set_bitmap(const GraphicsBitmap&);
+
     GraphicsBitmap& bitmap() { return *m_bitmap; }
     const GraphicsBitmap& bitmap() const { return *m_bitmap; }
 
diff --git a/Applications/PaintBrush/main.cpp b/Applications/PaintBrush/main.cpp
index 6d885e6ad5..6eedffd752 100644
--- a/Applications/PaintBrush/main.cpp
+++ b/Applications/PaintBrush/main.cpp
@@ -4,9 +4,12 @@
 #include <LibGUI/GAction.h>
 #include <LibGUI/GApplication.h>
 #include <LibGUI/GBoxLayout.h>
+#include <LibGUI/GFilePicker.h>
 #include <LibGUI/GMenu.h>
 #include <LibGUI/GMenuBar.h>
+#include <LibGUI/GMessageBox.h>
 #include <LibGUI/GWindow.h>
+#include <SharedGraphics/PNGLoader.h>
 
 int main(int argc, char** argv)
 {
@@ -41,6 +44,19 @@ int main(int argc, char** argv)
     menubar->add_menu(move(app_menu));
 
     auto file_menu = make<GMenu>("File");
+    file_menu->add_action(GAction::create("Open...", { Mod_Ctrl, Key_O }, [&](auto&) {
+        GFilePicker picker;
+        if (picker.exec() == GFilePicker::ExecOK) {
+            auto filename = picker.selected_file().string();
+            auto bitmap = load_png(filename);
+            if (!bitmap) {
+                GMessageBox msgbox(String::format("Failed to load '%s'", filename.characters()), "Open failed", GMessageBox::Type::Error, window);
+                msgbox.exec();
+                return;
+            }
+            paintable_widget->set_bitmap(*bitmap);
+        }
+    }));
     menubar->add_menu(move(file_menu));
 
     auto edit_menu = make<GMenu>("Edit");