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PixelPaint: Add level sliders for brightness, contrast and gamma

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This patch adds a basic dialog to change brightness, contrast and gamma
correction for the selected layer.
This commit is contained in:
Torstennator 2022-04-24 10:46:59 +02:00 • committed by Sam Atkins
parent 69c451e485
commit 5aeb6552f0
9 changed files with 303 additions and 0 deletions
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38
Userland/Applications/PixelPaint/LevelsDialog.h Normal file
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/*
* Copyright (c) 2022, Torsten Engelmann <engelTorsten@gmx.de>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include "ImageEditor.h"
#include "Layer.h"
#include <LibGUI/Dialog.h>
namespace PixelPaint {
class LevelsDialog final : public GUI::Dialog {
C_OBJECT(LevelsDialog);
public:
void revert_possible_changes();
private:
LevelsDialog(GUI::Window* parent_window, ImageEditor*);
ImageEditor* m_editor { nullptr };
RefPtr<Gfx::Bitmap> m_reference_bitmap { nullptr };
RefPtr<GUI::ValueSlider> m_brightness_slider = { nullptr };
RefPtr<GUI::ValueSlider> m_contrast_slider = { nullptr };
RefPtr<GUI::ValueSlider> m_gamma_slider = { nullptr };
bool m_did_change = false;
int m_precomputed_color_correction[256];
ErrorOr<void> ensure_reference_bitmap();
void generate_new_image();
void cleanup_resources();
void generate_precomputed_color_correction();
};
}