211 lines
8.3 KiB
C++
211 lines
8.3 KiB
C++
// Copyright 2014 Citra Emulator Project
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#pragma once
|
|
|
|
#include "common/common.h"
|
|
#include "common/scm_rev.h"
|
|
#include "common/string_util.h"
|
|
#include "common/key_map.h"
|
|
#include "common/math_util.h"
|
|
|
|
/**
|
|
* Abstraction class used to provide an interface between emulation code and the frontend
|
|
* (e.g. SDL, QGLWidget, GLFW, etc...).
|
|
*
|
|
* Design notes on the interaction between EmuWindow and the emulation core:
|
|
* - Generally, decisions on anything visible to the user should be left up to the GUI.
|
|
* For example, the emulation core should not try to dictate some window title or size.
|
|
* This stuff is not the core's business and only causes problems with regards to thread-safety
|
|
* anyway.
|
|
* - Under certain circumstances, it may be desirable for the core to politely request the GUI
|
|
* to set e.g. a minimum window size. However, the GUI should always be free to ignore any
|
|
* such hints.
|
|
* - EmuWindow may expose some of its state as read-only to the emulation core, however care
|
|
* should be taken to make sure the provided information is self-consistent. This requires
|
|
* some sort of synchronization (most of this is still a TODO).
|
|
* - DO NOT TREAT THIS CLASS AS A GUI TOOLKIT ABSTRACTION LAYER. That's not what it is. Please
|
|
* re-read the upper points again and think about it if you don't see this.
|
|
*/
|
|
class EmuWindow
|
|
{
|
|
public:
|
|
/// Data structure to store emuwindow configuration
|
|
struct WindowConfig {
|
|
bool fullscreen;
|
|
int res_width;
|
|
int res_height;
|
|
std::pair<unsigned,unsigned> min_client_area_size;
|
|
};
|
|
|
|
/// Describes the layout of the window framebuffer (size and top/bottom screen positions)
|
|
struct FramebufferLayout {
|
|
|
|
/**
|
|
* Factory method for constructing a default FramebufferLayout
|
|
* @param width Window framebuffer width in pixels
|
|
* @param height Window framebuffer height in pixels
|
|
* @return Newly created FramebufferLayout object with default screen regions initialized
|
|
*/
|
|
static FramebufferLayout DefaultScreenLayout(unsigned width, unsigned height);
|
|
|
|
unsigned width;
|
|
unsigned height;
|
|
MathUtil::Rectangle<unsigned> top_screen;
|
|
MathUtil::Rectangle<unsigned> bottom_screen;
|
|
};
|
|
|
|
/// Swap buffers to display the next frame
|
|
virtual void SwapBuffers() = 0;
|
|
|
|
/// Polls window events
|
|
virtual void PollEvents() = 0;
|
|
|
|
/// Makes the graphics context current for the caller thread
|
|
virtual void MakeCurrent() = 0;
|
|
|
|
/// Releases (dunno if this is the "right" word) the GLFW context from the caller thread
|
|
virtual void DoneCurrent() = 0;
|
|
|
|
virtual void ReloadSetKeymaps() = 0;
|
|
|
|
/// Signals a key press action to the HID module
|
|
void KeyPressed(KeyMap::HostDeviceKey key);
|
|
|
|
/// Signals a key release action to the HID module
|
|
void KeyReleased(KeyMap::HostDeviceKey key);
|
|
|
|
/**
|
|
* Signal that a touch pressed event has occurred (e.g. mouse click pressed)
|
|
* @param framebuffer_x Framebuffer x-coordinate that was pressed
|
|
* @param framebuffer_y Framebuffer y-coordinate that was pressed
|
|
*/
|
|
void TouchPressed(unsigned framebuffer_x, unsigned framebuffer_y);
|
|
|
|
/// Signal that a touch released event has occurred (e.g. mouse click released)
|
|
void TouchReleased();
|
|
|
|
/**
|
|
* Signal that a touch movement event has occurred (e.g. mouse was moved over the emu window)
|
|
* @param framebuffer_x Framebuffer x-coordinate
|
|
* @param framebuffer_y Framebuffer y-coordinate
|
|
*/
|
|
void TouchMoved(unsigned framebuffer_x, unsigned framebuffer_y);
|
|
|
|
/**
|
|
* Gets the current pad state (which buttons are pressed and the circle pad direction).
|
|
* @note This should be called by the core emu thread to get a state set by the window thread.
|
|
* @todo Fix this function to be thread-safe.
|
|
* @return PadState object indicating the current pad state
|
|
*/
|
|
const Service::HID::PadState GetPadState() const {
|
|
return pad_state;
|
|
}
|
|
|
|
/**
|
|
* Gets the current touch screen state (touch X/Y coordinates and whether or not it is pressed).
|
|
* @note This should be called by the core emu thread to get a state set by the window thread.
|
|
* @todo Fix this function to be thread-safe.
|
|
* @return std::tuple of (x, y, pressed) where `x` and `y` are the touch coordinates and
|
|
* `pressed` is true if the touch screen is currently being pressed
|
|
*/
|
|
const std::tuple<u16, u16, bool> GetTouchState() const {
|
|
return std::make_tuple(touch_x, touch_y, touch_pressed);
|
|
}
|
|
|
|
/**
|
|
* Returns currently active configuration.
|
|
* @note Accesses to the returned object need not be consistent because it may be modified in another thread
|
|
*/
|
|
const WindowConfig& GetActiveConfig() const {
|
|
return active_config;
|
|
}
|
|
|
|
/**
|
|
* Requests the internal configuration to be replaced by the specified argument at some point in the future.
|
|
* @note This method is thread-safe, because it delays configuration changes to the GUI event loop. Hence there is no guarantee on when the requested configuration will be active.
|
|
*/
|
|
void SetConfig(const WindowConfig& val) {
|
|
config = val;
|
|
}
|
|
|
|
/**
|
|
* Gets the framebuffer layout (width, height, and screen regions)
|
|
* @note This method is thread-safe
|
|
*/
|
|
const FramebufferLayout& GetFramebufferLayout() const {
|
|
return framebuffer_layout;
|
|
}
|
|
|
|
protected:
|
|
EmuWindow() {
|
|
// TODO: Find a better place to set this.
|
|
config.min_client_area_size = std::make_pair(400u, 480u);
|
|
active_config = config;
|
|
pad_state.hex = 0;
|
|
touch_x = 0;
|
|
touch_y = 0;
|
|
touch_pressed = false;
|
|
}
|
|
virtual ~EmuWindow() {}
|
|
|
|
/**
|
|
* Processes any pending configuration changes from the last SetConfig call.
|
|
* This method invokes OnMinimalClientAreaChangeRequest if the corresponding configuration
|
|
* field changed.
|
|
* @note Implementations will usually want to call this from the GUI thread.
|
|
* @todo Actually call this in existing implementations.
|
|
*/
|
|
void ProcessConfigurationChanges() {
|
|
// TODO: For proper thread safety, we should eventually implement a proper
|
|
// multiple-writer/single-reader queue...
|
|
|
|
if (config.min_client_area_size != active_config.min_client_area_size) {
|
|
OnMinimalClientAreaChangeRequest(config.min_client_area_size);
|
|
config.min_client_area_size = active_config.min_client_area_size;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Update framebuffer layout with the given parameter.
|
|
* @note EmuWindow implementations will usually use this in window resize event handlers.
|
|
*/
|
|
void NotifyFramebufferLayoutChanged(const FramebufferLayout& layout) {
|
|
framebuffer_layout = layout;
|
|
}
|
|
|
|
/**
|
|
* Update internal client area size with the given parameter.
|
|
* @note EmuWindow implementations will usually use this in window resize event handlers.
|
|
*/
|
|
void NotifyClientAreaSizeChanged(const std::pair<unsigned,unsigned>& size) {
|
|
client_area_width = size.first;
|
|
client_area_height = size.second;
|
|
}
|
|
|
|
private:
|
|
/**
|
|
* Handler called when the minimal client area was requested to be changed via SetConfig.
|
|
* For the request to be honored, EmuWindow implementations will usually reimplement this function.
|
|
*/
|
|
virtual void OnMinimalClientAreaChangeRequest(const std::pair<unsigned,unsigned>& minimal_size) {
|
|
// By default, ignore this request and do nothing.
|
|
}
|
|
|
|
FramebufferLayout framebuffer_layout; ///< Current framebuffer layout
|
|
|
|
unsigned client_area_width; ///< Current client width, should be set by window impl.
|
|
unsigned client_area_height; ///< Current client height, should be set by window impl.
|
|
|
|
WindowConfig config; ///< Internal configuration (changes pending for being applied in ProcessConfigurationChanges)
|
|
WindowConfig active_config; ///< Internal active configuration
|
|
|
|
bool touch_pressed; ///< True if touchpad area is currently pressed, otherwise false
|
|
|
|
u16 touch_x; ///< Touchpad X-position in native 3DS pixel coordinates (0-320)
|
|
u16 touch_y; ///< Touchpad Y-position in native 3DS pixel coordinates (0-240)
|
|
|
|
Service::HID::PadState pad_state;
|
|
};
|