PixelPaint: Export image as BMP

You can now export your masterpieces as fresh, crisp BMP files.

Applications/PixelPaint/CMakeLists.txt

@@ -1,6 +1,7 @@
 set(SOURCES
     BrushTool.cpp
     BucketTool.cpp
+    CreateNewImageDialog.cpp
     CreateNewLayerDialog.cpp
     EllipseTool.cpp
     EraseTool.cpp

Applications/PixelPaint/CreateNewImageDialog.cpp

@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2020, Ben Jilks <benjyjilks@gmail.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "CreateNewImageDialog.h"
+#include <LibGUI/BoxLayout.h>
+#include <LibGUI/Button.h>
+#include <LibGUI/Label.h>
+#include <LibGUI/SpinBox.h>
+#include <LibGUI/TextBox.h>
+
+namespace PixelPaint {
+
+CreateNewImageDialog::CreateNewImageDialog(GUI::Window* parent_window)
+    : Dialog(parent_window)
+{
+    set_title("Create new image");
+    resize(200, 200);
+
+    auto& main_widget = set_main_widget<GUI::Widget>();
+    main_widget.set_fill_with_background_color(true);
+
+    auto& layout = main_widget.set_layout<GUI::VerticalBoxLayout>();
+    layout.set_margins({ 4, 4, 4, 4 });
+
+    auto& name_label = main_widget.add<GUI::Label>("Name:");
+    name_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
+
+    m_name_textbox = main_widget.add<GUI::TextBox>();
+    m_name_textbox->on_change = [this] {
+        m_image_name = m_name_textbox->text();
+    };
+
+    auto& width_label = main_widget.add<GUI::Label>("Width:");
+    width_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
+
+    auto& width_spinbox = main_widget.add<GUI::SpinBox>();
+
+    auto& height_label = main_widget.add<GUI::Label>("Height:");
+    height_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
+
+    auto& height_spinbox = main_widget.add<GUI::SpinBox>();
+
+    auto& button_container = main_widget.add<GUI::Widget>();
+    button_container.set_layout<GUI::HorizontalBoxLayout>();
+
+    auto& ok_button = button_container.add<GUI::Button>("OK");
+    ok_button.on_click = [this](auto) {
+        done(ExecOK);
+    };
+
+    auto& cancel_button = button_container.add<GUI::Button>("Cancel");
+    cancel_button.on_click = [this](auto) {
+        done(ExecCancel);
+    };
+
+    width_spinbox.on_change = [this](int value) {
+        m_image_size.set_width(value);
+    };
+
+    height_spinbox.on_change = [this](int value) {
+        m_image_size.set_height(value);
+    };
+
+    width_spinbox.set_range(0, 16384);
+    height_spinbox.set_range(0, 16384);
+}
+
+}

Applications/PixelPaint/CreateNewImageDialog.h

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2020, Ben Jilks <benjyjilks@gmail.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <LibGUI/Dialog.h>
+
+namespace PixelPaint {
+
+class CreateNewImageDialog final : public GUI::Dialog {
+    C_OBJECT(CreateNewImageDialog)
+
+public:
+    const Gfx::IntSize& image_size() const { return m_image_size; }
+    const String& image_name() const { return m_image_name; }
+
+private:
+    CreateNewImageDialog(GUI::Window* parent_window);
+
+    String m_image_name;
+    Gfx::IntSize m_image_size;
+
+    RefPtr<GUI::TextBox> m_name_textbox;
+};
+
+}

Applications/PixelPaint/Image.cpp

@@ -32,7 +32,7 @@
 #include <AK/JsonValue.h>
 #include <AK/StringBuilder.h>
 #include <LibGUI/Painter.h>
-#include <LibGfx/BMPDumper.h>
+#include <LibGfx/BMPWriter.h>
 #include <LibGfx/ImageDecoder.h>
 #include <stdio.h>
 
@@ -118,7 +118,7 @@ void Image::save(const String& file_path) const
     {
         auto json_layers = json.add_array("layers");
         for (const auto& layer : m_layers) {
-            Gfx::BMPDumper bmp_dumber;
+            Gfx::BMPWriter bmp_dumber;
             auto json_layer = json_layers.add_object();
             json_layer.add("width", layer.size().width());
             json_layer.add("height", layer.size().height());
@@ -140,6 +140,19 @@ void Image::save(const String& file_path) const
     fclose(file);
 }
 
+void Image::export_bmp(const String& file_path)
+{
+    auto bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::RGB32, m_size);
+    GUI::Painter painter(*bitmap);
+    paint_into(painter, { 0, 0, m_size.width(), m_size.height() });
+
+    Gfx::BMPWriter dumper;
+    auto bmp = dumper.dump(bitmap);
+    auto file = fopen(file_path.characters(), "wb");
+    fwrite(bmp.data(), sizeof(u8), bmp.size(), file);
+    fclose(file);
+}
+
 void Image::add_layer(NonnullRefPtr<Layer> layer)
 {
     for (auto& existing_layer : m_layers) {

Applications/PixelPaint/Image.h

@@ -68,6 +68,7 @@ public:
 
     void paint_into(GUI::Painter&, const Gfx::IntRect& dest_rect);
     void save(const String& file_path) const;
+    void export_bmp(const String& file_path);
 
     void move_layer_to_front(Layer&);
     void move_layer_to_back(Layer&);

Applications/PixelPaint/ImageEditor.cpp

@@ -51,9 +51,10 @@ void ImageEditor::set_image(RefPtr<Image> image)
         m_image->remove_client(*this);
 
     m_image = move(image);
+    m_active_layer = nullptr;
     m_history.reset(*m_image);
     update();
-    image_did_modify_layer_stack();
+    relayout();
 
     if (m_image)
         m_image->add_client(*this);

Applications/PixelPaint/main.cpp

@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include "CreateNewImageDialog.h"
 #include "CreateNewLayerDialog.h"
 #include "FilterParams.h"
 #include "Image.h"
@@ -109,6 +110,22 @@ int main(int argc, char** argv)
     auto menubar = GUI::MenuBar::construct();
     auto& app_menu = menubar->add_menu("PixelPaint");
 
+    app_menu.add_action(
+        GUI::Action::create(
+            "New", [&](auto&) {
+                auto dialog = PixelPaint::CreateNewImageDialog::construct(window);
+                if (dialog->exec() == GUI::Dialog::ExecOK) {
+                    auto image = PixelPaint::Image::create_with_size(dialog->image_size());
+                    auto bg_layer = PixelPaint::Layer::create_with_size(*image, image->size(), "Background");
+                    image->add_layer(*bg_layer);
+                    bg_layer->bitmap().fill(Color::White);
+
+                    image_editor.set_image(image);
+                    layer_list_widget.set_image(image);
+                    image_editor.set_active_layer(bg_layer);
+                }
+            },
+            window));
     app_menu.add_action(GUI::CommonActions::make_open_action([&](auto&) {
         Optional<String> open_path = GUI::FilePicker::get_open_filepath(window);
 
@@ -130,6 +147,22 @@ int main(int argc, char** argv)
 
         image_editor.image()->save(save_path.value());
     }));
+    auto& export_submenu = app_menu.add_submenu("Export");
+    export_submenu.add_action(
+        GUI::Action::create(
+            "As BMP", [&](auto&) {
+                if (!image_editor.image())
+                    return;
+
+                Optional<String> save_path = GUI::FilePicker::get_save_filepath(window, "untitled", "bmp");
+
+                if (!save_path.has_value())
+                    return;
+
+                image_editor.image()->export_bmp(save_path.value());
+            },
+            window));
+
     app_menu.add_separator();
     app_menu.add_action(GUI::CommonActions::make_quit_action([](auto&) {
         GUI::Application::the()->quit();