mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-01-08 04:15:23 +03:00
85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
/*
|
|
* Copyright (c) 2022, Mustafa Quraish <mustafa@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <LibGUI/Frame.h>
|
|
#include <LibGfx/Point.h>
|
|
#include <LibGfx/Rect.h>
|
|
|
|
namespace GUI {
|
|
|
|
class AbstractZoomPanWidget : public GUI::Frame {
|
|
C_OBJECT(AbstractZoomPanWidget);
|
|
|
|
public:
|
|
void set_scale(float scale);
|
|
float scale() const { return m_scale; }
|
|
void set_scale_bounds(float min_scale, float max_scale);
|
|
|
|
void scale_by(float amount);
|
|
void scale_centered(float new_scale, Gfx::IntPoint center);
|
|
|
|
bool is_panning() const { return m_is_panning; }
|
|
void start_panning(Gfx::IntPoint position);
|
|
void stop_panning();
|
|
|
|
void pan_to(Gfx::IntPoint position);
|
|
|
|
// Should be overridden by derived classes if they want updates.
|
|
virtual void handle_relayout(Gfx::IntRect const&) { update(); }
|
|
void relayout();
|
|
|
|
Gfx::FloatPoint frame_to_content_position(Gfx::IntPoint frame_position) const;
|
|
Gfx::FloatRect frame_to_content_rect(Gfx::IntRect const& frame_rect) const;
|
|
Gfx::FloatPoint content_to_frame_position(Gfx::IntPoint content_position) const;
|
|
Gfx::FloatRect content_to_frame_rect(Gfx::IntRect const& content_rect) const;
|
|
|
|
virtual void mousewheel_event(GUI::MouseEvent& event) override;
|
|
virtual void mousedown_event(GUI::MouseEvent& event) override;
|
|
virtual void resize_event(GUI::ResizeEvent& event) override;
|
|
virtual void mousemove_event(GUI::MouseEvent& event) override;
|
|
virtual void mouseup_event(GUI::MouseEvent& event) override;
|
|
|
|
void set_original_rect(Gfx::IntRect const& rect) { m_original_rect = rect; }
|
|
void set_content_rect(Gfx::IntRect const& content_rect);
|
|
void set_origin(Gfx::FloatPoint origin) { m_origin = origin; }
|
|
|
|
void reset_view();
|
|
|
|
Gfx::IntRect content_rect() const { return m_content_rect; }
|
|
|
|
Function<void(float)> on_scale_change;
|
|
|
|
enum class FitType {
|
|
Width,
|
|
Height,
|
|
Both
|
|
};
|
|
void fit_content_to_rect(Gfx::IntRect const& rect, FitType = FitType::Both);
|
|
void fit_content_to_view(FitType fit_type = FitType::Both)
|
|
{
|
|
fit_content_to_rect(rect(), fit_type);
|
|
}
|
|
|
|
private:
|
|
Gfx::IntRect m_original_rect;
|
|
Gfx::IntRect m_content_rect;
|
|
|
|
Gfx::IntPoint m_pan_mouse_pos;
|
|
Gfx::FloatPoint m_origin;
|
|
Gfx::FloatPoint m_pan_start;
|
|
bool m_is_panning { false };
|
|
|
|
float m_min_scale { 0.1f };
|
|
float m_max_scale { 10.0f };
|
|
float m_scale { 1.0f };
|
|
|
|
AK::Variant<Gfx::StandardCursor, NonnullRefPtr<Gfx::Bitmap const>> m_saved_cursor { Gfx::StandardCursor::None };
|
|
};
|
|
|
|
}
|