TGUI  0.10-dev
BackendGuiSDL.hpp
1
2//
3// TGUI - Texus' Graphical User Interface
4// Copyright (C) 2012-2021 Bruno Van de Velde (vdv_b@tgui.eu)
5//
6// This software is provided 'as-is', without any express or implied warranty.
7// In no event will the authors be held liable for any damages arising from the use of this software.
8//
9// Permission is granted to anyone to use this software for any purpose,
10// including commercial applications, and to alter it and redistribute it freely,
11// subject to the following restrictions:
12//
13// 1. The origin of this software must not be misrepresented;
14// you must not claim that you wrote the original software.
15// If you use this software in a product, an acknowledgment
16// in the product documentation would be appreciated but is not required.
17//
18// 2. Altered source versions must be plainly marked as such,
19// and must not be misrepresented as being the original software.
20//
21// 3. This notice may not be removed or altered from any source distribution.
22//
24
25
26#ifndef TGUI_BACKEND_GUI_SDL_HPP
27#define TGUI_BACKEND_GUI_SDL_HPP
28
29#include <TGUI/Backend/Window/BackendGui.hpp>
30#include <SDL.h>
31#include <SDL_touch.h>
32
34
35namespace tgui
36{
38
39 class TGUI_API BackendGuiSDL : public BackendGui
40 {
41 public:
42
48 BackendGuiSDL() = default;
49
50
67 bool handleEvent(const SDL_Event& event);
69
70
96 void mainLoop() override;
97
98
107 bool convertEvent(const SDL_Event& eventSDL, Event& eventTGUI);
108
109
111 protected:
112
118 void setGuiWindow(SDL_Window* window);
119
120
122 // Updates the view and changes the size of the root container when needed
124 void updateContainerSize() override;
125
126
128 protected:
129
133 virtual void presentScreen() = 0;
134
135
137 protected:
138
139 SDL_Window* m_window = nullptr;
140
141 bool m_touchFirstFingerDown = false;
142 SDL_FingerID m_touchFirstFingerId = 0; // Only valid if m_touchFirstFingerDown is true
143 SDL_TouchID m_touchFirstFingerTouchId = 0; // Only valid if m_touchFirstFingerDown is true
144
146 };
147}
148
150
151#endif // TGUI_BACKEND_GUI_SDL_HPP
Definition: BackendGuiSDL.hpp:40
void mainLoop() override
Give the gui control over the main loop.
BackendGuiSDL()=default
Default constructor.
void setGuiWindow(SDL_Window *window)
Sets the window on which the gui should be drawn.
bool convertEvent(const SDL_Event &eventSDL, Event &eventTGUI)
Helper function that converts an SDL event to a TGUI event.
bool handleEvent(const SDL_Event &event)
Passes the event to the widgets.
virtual void presentScreen()=0
Shows the drawn content with SDL_GL_SwapWindow or SDL_RenderPresent, depending on the renderer.
Base class for the Gui.
Definition: BackendGui.hpp:45
bool handleEvent(Event event)
Passes the event to the widgets.
Namespace that contains all TGUI functions and classes.
Definition: AbsoluteOrRelativeValue.hpp:36
Definition: Event.hpp:37