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e87b8a79ed
Almost all logic stays in "logical" (unscaled coordinates), which means the patch is small and things like DnD, window moving and resizing, menu handling, menuapplets, etc all work without changes. Screen knows about phyiscal coordinates and mouse handling internally is in physical coordinates (so that two 1 pixel movements in succession can translate to one 1 logical coordinate mouse movement -- only a single event is sent in this case, on the 2nd moved pixel). Compositor also knows about physical pixels for its backbuffers. This is a temporary state -- in a follow-up, I'll try to let Bitmaps know about their intrinsic scale, then Compositor won't have to know about pixels any longer. Most of Compositor's logic stays in view units, just blitting to and from back buffers and the cursor save buffer has to be done in pixels. The back buffer Painter gets a scale applied which transparently handles all drawing. (But since the backbuffer and cursor save buffer are also HighDPI, they currently need to be drawn using a hack temporary unscaled Painter object. This will also go away once Bitmaps know about their intrinsic scale.) With this, editing WindowServer.ini to say Width=800 Height=600 ScaleFactor=2 and booting brings up a fully-functional HighDPI UI. (Except for minimizing windows, which will crash the window server until #4932 is merged. And I didn't test the window switcher since the win-tab shortcut doesn't work on my system.) It's all pixel-scaled, but it looks pretty decent :^)
108 lines
3.7 KiB
C++
108 lines
3.7 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <Kernel/API/KeyCode.h>
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#include <LibGfx/Color.h>
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#include <LibGfx/Rect.h>
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#include <LibGfx/Size.h>
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struct MousePacket;
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namespace WindowServer {
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const double mouse_accel_max = 3.5;
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const double mouse_accel_min = 0.5;
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const unsigned scroll_step_size_min = 1;
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class Screen {
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public:
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Screen(unsigned width, unsigned height, int scale_factor);
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~Screen();
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bool set_resolution(int width, int height, int scale_factor);
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bool can_set_buffer() { return m_can_set_buffer; }
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void set_buffer(int index);
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int physical_width() const { return width() * scale_factor(); }
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int physical_height() const { return height() * scale_factor(); }
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size_t pitch() const { return m_pitch; }
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int width() const { return m_width; }
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int height() const { return m_height; }
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int scale_factor() const { return m_scale_factor; }
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Gfx::RGBA32* scanline(int y);
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static Screen& the();
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Gfx::IntSize physical_size() const { return { physical_width(), physical_height() }; }
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Gfx::IntRect physical_rect() const { return { { 0, 0 }, physical_size() }; }
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Gfx::IntSize size() const { return { width(), height() }; }
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Gfx::IntRect rect() const { return { { 0, 0 }, size() }; }
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Gfx::IntPoint cursor_location() const { return m_physical_cursor_location / m_scale_factor; }
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unsigned mouse_button_state() const { return m_mouse_button_state; }
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double acceleration_factor() const { return m_acceleration_factor; }
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void set_acceleration_factor(double);
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unsigned scroll_step_size() const { return m_scroll_step_size; }
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void set_scroll_step_size(unsigned);
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void on_receive_mouse_data(const MousePacket&);
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void on_receive_keyboard_data(::KeyEvent);
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private:
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void on_change_resolution(int pitch, int physical_width, int physical_height, int scale_factor);
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size_t m_size_in_bytes;
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Gfx::RGBA32* m_framebuffer { nullptr };
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bool m_can_set_buffer { false };
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int m_pitch { 0 };
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int m_width { 0 };
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int m_height { 0 };
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int m_framebuffer_fd { -1 };
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int m_scale_factor { 1 };
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Gfx::IntPoint m_physical_cursor_location;
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unsigned m_mouse_button_state { 0 };
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unsigned m_modifiers { 0 };
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double m_acceleration_factor { 1.0 };
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unsigned m_scroll_step_size { 1 };
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};
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inline Gfx::RGBA32* Screen::scanline(int y)
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{
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return reinterpret_cast<Gfx::RGBA32*>(((u8*)m_framebuffer) + (y * m_pitch));
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}
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}
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