PixelPaint: Rename from PaintBrush :^)

1 files changed, 134 insertions, 0 deletions

diff --git a/Applications/PixelPaint/Image.cpp b/Applications/PixelPaint/Image.cpp
new file mode 100644
index 0000000000..ca20eb146a
--- /dev/null
+++ b/Applications/PixelPaint/Image.cpp
@@ -0,0 +1,134 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * 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 "Image.h"
+#include "Layer.h"
+#include "LayerModel.h"
+#include <LibGUI/Painter.h>
+
+//#define PAINT_DEBUG
+
+namespace PixelPaint {
+
+RefPtr<Image> Image::create_with_size(const Gfx::Size& size)
+{
+    if (size.is_empty())
+        return nullptr;
+
+    if (size.width() > 16384 || size.height() > 16384)
+        return nullptr;
+
+    return adopt(*new Image(size));
+}
+
+Image::Image(const Gfx::Size& size)
+    : m_size(size)
+{
+}
+
+void Image::paint_into(GUI::Painter& painter, const Gfx::Rect& dest_rect, const Gfx::Rect& src_rect)
+{
+    (void) src_rect;
+    Gfx::PainterStateSaver saver(painter);
+    painter.add_clip_rect(dest_rect);
+    for (auto& layer : m_layers) {
+        auto target = dest_rect.translated(layer.location());
+        target.set_size(layer.size());
+#ifdef IMAGE_DEBUG
+        dbg() << "Composite layer " << layer.name() << " target: " << target << ", layer.rect: " << layer.rect();
+#endif
+        painter.draw_scaled_bitmap(target, layer.bitmap(), layer.rect());
+    }
+}
+
+void Image::add_layer(NonnullRefPtr<Layer> layer)
+{
+    for (auto& existing_layer : m_layers) {
+        ASSERT(&existing_layer != layer.ptr());
+    }
+    m_layers.append(move(layer));
+}
+
+GUI::Model& Image::layer_model()
+{
+    if (!m_layer_model)
+        m_layer_model = LayerModel::create(*this);
+    return *m_layer_model;
+}
+
+size_t Image::index_of(const Layer& layer) const
+{
+    for (size_t i = 0; i < m_layers.size(); ++i) {
+        if (&m_layers.at(i) == &layer)
+            return i;
+    }
+    ASSERT_NOT_REACHED();
+}
+
+void Image::move_layer_to_back(Layer& layer)
+{
+    NonnullRefPtr<Layer> protector(layer);
+    auto index = index_of(layer);
+    m_layers.remove(index);
+    m_layers.prepend(layer);
+}
+
+void Image::move_layer_to_front(Layer& layer)
+{
+    NonnullRefPtr<Layer> protector(layer);
+    auto index = index_of(layer);
+    m_layers.remove(index);
+    m_layers.append(layer);
+}
+
+void Image::move_layer_down(Layer& layer)
+{
+    NonnullRefPtr<Layer> protector(layer);
+    auto index = index_of(layer);
+    if (!index)
+        return;
+    m_layers.remove(index);
+    m_layers.insert(index - 1, layer);
+}
+
+void Image::move_layer_up(Layer& layer)
+{
+    NonnullRefPtr<Layer> protector(layer);
+    auto index = index_of(layer);
+    if (index == m_layers.size() - 1)
+        return;
+    m_layers.remove(index);
+    m_layers.insert(index + 1, layer);
+}
+
+void Image::remove_layer(Layer& layer)
+{
+    NonnullRefPtr<Layer> protector(layer);
+    auto index = index_of(layer);
+    m_layers.remove(index);
+}
+
+}