mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-09-21 10:19:03 +03:00
72 lines
1.6 KiB
C++
72 lines
1.6 KiB
C++
/*
|
|
* Copyright (c) 2021, Matthew Olsson <mattco@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/HashMap.h>
|
|
#include <LibGUI/AbstractScrollableWidget.h>
|
|
#include <LibGfx/Bitmap.h>
|
|
#include <LibPDF/Document.h>
|
|
|
|
static constexpr u16 zoom_levels[] = {
|
|
17,
|
|
21,
|
|
26,
|
|
33,
|
|
41,
|
|
51,
|
|
64,
|
|
80,
|
|
100,
|
|
120,
|
|
144,
|
|
173,
|
|
207,
|
|
249,
|
|
299,
|
|
358,
|
|
430
|
|
};
|
|
|
|
static constexpr size_t number_of_zoom_levels = sizeof(zoom_levels) / sizeof(zoom_levels[0]);
|
|
|
|
static constexpr size_t initial_zoom_level = 8;
|
|
|
|
class PDFViewer : public GUI::AbstractScrollableWidget {
|
|
C_OBJECT(PDFViewer)
|
|
|
|
public:
|
|
virtual ~PDFViewer() override = default;
|
|
|
|
ALWAYS_INLINE u32 current_page() const { return m_current_page_index; }
|
|
ALWAYS_INLINE void set_current_page(u32 current_page) { m_current_page_index = current_page; }
|
|
|
|
ALWAYS_INLINE const RefPtr<PDF::Document>& document() const { return m_document; }
|
|
void set_document(RefPtr<PDF::Document>);
|
|
|
|
Function<void(u32 new_page)> on_page_change;
|
|
|
|
protected:
|
|
PDFViewer();
|
|
|
|
virtual void paint_event(GUI::PaintEvent&) override;
|
|
virtual void mousewheel_event(GUI::MouseEvent&) override;
|
|
virtual void timer_event(Core::TimerEvent&) override;
|
|
|
|
private:
|
|
RefPtr<Gfx::Bitmap> get_rendered_page(u32 index);
|
|
RefPtr<Gfx::Bitmap> render_page(const PDF::Page&);
|
|
|
|
void zoom_in();
|
|
void zoom_out();
|
|
|
|
RefPtr<PDF::Document> m_document;
|
|
u32 m_current_page_index { 0 };
|
|
Vector<HashMap<u32, RefPtr<Gfx::Bitmap>>> m_rendered_page_list;
|
|
|
|
u8 m_zoom_level { initial_zoom_level };
|
|
};
|