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/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkUtils.h"
#include "Timer.h"
#include "WindowContextFactory_ios.h"
#include "Window_ios.h"
namespace sk_app {
SkTDynamicHash<Window_ios, Uint32> Window_ios::gWindowMap;
Window* Window::CreateNativeWindow(void*) {
Window_ios* window = new Window_ios();
if (!window->initWindow()) {
delete window;
return nullptr;
}
return window;
}
bool Window_ios::initWindow() {
if (fRequestedDisplayParams.fMSAASampleCount != fMSAASampleCount) {
this->closeWindow();
}
// we already have a window
if (fWindow) {
return true;
}
constexpr int initialWidth = 1280;
constexpr int initialHeight = 960;
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 0);
SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_ACCELERATED_VISUAL, 1);
if (fRequestedDisplayParams.fMSAASampleCount > 0) {
SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, fRequestedDisplayParams.fMSAASampleCount);
} else {
SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 0);
}
// TODO: handle other display params
uint32_t windowFlags = SDL_WINDOW_OPENGL | SDL_WINDOW_FULLSCREEN | SDL_WINDOW_ALLOW_HIGHDPI;
fWindow = SDL_CreateWindow("SDL Window", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
initialWidth, initialHeight, windowFlags);
if (!fWindow) {
return false;
}
fMSAASampleCount = fRequestedDisplayParams.fMSAASampleCount;
// add to hashtable of windows
fWindowID = SDL_GetWindowID(fWindow);
gWindowMap.add(this);
return true;
}
void Window_ios::closeWindow() {
if (fWindow) {
gWindowMap.remove(fWindowID);
SDL_DestroyWindow(fWindow);
fWindowID = 0;
fWindow = nullptr;
}
}
static Window::Key get_key(const SDL_Keysym& keysym) {
static const struct {
SDL_Keycode fSDLK;
Window::Key fKey;
} gPair[] = {
{ SDLK_BACKSPACE, Window::Key::kBack },
{ SDLK_CLEAR, Window::Key::kBack },
{ SDLK_RETURN, Window::Key::kOK },
{ SDLK_UP, Window::Key::kUp },
{ SDLK_DOWN, Window::Key::kDown },
{ SDLK_LEFT, Window::Key::kLeft },
{ SDLK_RIGHT, Window::Key::kRight },
{ SDLK_TAB, Window::Key::kTab },
{ SDLK_PAGEUP, Window::Key::kPageUp },
{ SDLK_PAGEDOWN, Window::Key::kPageDown },
{ SDLK_HOME, Window::Key::kHome },
{ SDLK_END, Window::Key::kEnd },
{ SDLK_DELETE, Window::Key::kDelete },
{ SDLK_ESCAPE, Window::Key::kEscape },
{ SDLK_LSHIFT, Window::Key::kShift },
{ SDLK_RSHIFT, Window::Key::kShift },
{ SDLK_LCTRL, Window::Key::kCtrl },
{ SDLK_RCTRL, Window::Key::kCtrl },
{ SDLK_LALT, Window::Key::kOption },
{ SDLK_LALT, Window::Key::kOption },
{ 'A', Window::Key::kA },
{ 'C', Window::Key::kC },
{ 'V', Window::Key::kV },
{ 'X', Window::Key::kX },
{ 'Y', Window::Key::kY },
{ 'Z', Window::Key::kZ },
};
for (size_t i = 0; i < SK_ARRAY_COUNT(gPair); i++) {
if (gPair[i].fSDLK == keysym.sym) {
return gPair[i].fKey;
}
}
return Window::Key::kNONE;
}
static uint32_t get_modifiers(const SDL_Event& event) {
static const struct {
unsigned fSDLMask;
unsigned fSkMask;
} gModifiers[] = {
{ KMOD_SHIFT, Window::kShift_ModifierKey },
{ KMOD_CTRL, Window::kControl_ModifierKey },
{ KMOD_ALT, Window::kOption_ModifierKey },
};
auto modifiers = 0;
switch (event.type) {
case SDL_KEYDOWN:
// fall through
case SDL_KEYUP: {
for (size_t i = 0; i < SK_ARRAY_COUNT(gModifiers); ++i) {
if (event.key.keysym.mod & gModifiers[i].fSDLMask) {
modifiers |= gModifiers[i].fSkMask;
}
}
if (0 == event.key.repeat) {
modifiers |= Window::kFirstPress_ModifierKey;
}
break;
}
default: {
SDL_Keymod mod = SDL_GetModState();
for (size_t i = 0; i < SK_ARRAY_COUNT(gModifiers); ++i) {
if (mod & gModifiers[i].fSDLMask) {
modifiers |= gModifiers[i].fSkMask;
}
}
break;
}
}
return modifiers;
}
bool Window_ios::HandleWindowEvent(const SDL_Event& event) {
Window_ios* win = gWindowMap.find(event.window.windowID);
if (win && win->handleEvent(event)) {
return true;
}
return false;
}
bool Window_ios::handleEvent(const SDL_Event& event) {
switch (event.type) {
case SDL_WINDOWEVENT:
if (SDL_WINDOWEVENT_EXPOSED == event.window.event) {
this->onPaint();
} else if (SDL_WINDOWEVENT_RESIZED == event.window.event) {
this->onResize(event.window.data1, event.window.data2);
}
break;
case SDL_MOUSEBUTTONDOWN:
if (event.button.button == SDL_BUTTON_LEFT) {
this->onMouse(event.button.x, event.button.y,
Window::kDown_InputState, get_modifiers(event));
}
break;
case SDL_MOUSEBUTTONUP:
if (event.button.button == SDL_BUTTON_LEFT) {
this->onMouse(event.button.x, event.button.y,
Window::kUp_InputState, get_modifiers(event));
}
break;
case SDL_MOUSEMOTION:
this->onMouse(event.motion.x, event.motion.y,
Window::kMove_InputState, get_modifiers(event));
break;
case SDL_MOUSEWHEEL:
this->onMouseWheel(event.wheel.y, get_modifiers(event));
break;
case SDL_KEYDOWN: {
Window::Key key = get_key(event.key.keysym);
if (key != Window::Key::kNONE) {
if (!this->onKey(key, Window::kDown_InputState, get_modifiers(event))) {
if (event.key.keysym.sym == SDLK_ESCAPE) {
return true;
}
}
}
} break;
case SDL_KEYUP: {
Window::Key key = get_key(event.key.keysym);
if (key != Window::Key::kNONE) {
(void) this->onKey(key, Window::kUp_InputState,
get_modifiers(event));
}
} break;
case SDL_TEXTINPUT: {
const char* textIter = &event.text.text[0];
while (SkUnichar c = SkUTF8_NextUnichar(&textIter)) {
(void) this->onChar(c, get_modifiers(event));
}
} break;
default:
break;
}
return false;
}
void Window_ios::setTitle(const char* title) {
SDL_SetWindowTitle(fWindow, title);
}
void Window_ios::show() {
SDL_ShowWindow(fWindow);
}
bool Window_ios::attach(BackendType attachType) {
this->initWindow();
window_context_factory::IOSWindowInfo info;
info.fWindow = fWindow;
switch (attachType) {
case kRaster_BackendType:
fWindowContext = NewRasterForIOS(info, fRequestedDisplayParams);
break;
case kNativeGL_BackendType:
default:
fWindowContext = NewGLForIOS(info, fRequestedDisplayParams);
break;
}
this->onBackendCreated();
return (SkToBool(fWindowContext));
}
void Window_ios::onInval() {
SDL_Event sdlevent;
sdlevent.type = SDL_WINDOWEVENT;
sdlevent.window.windowID = fWindowID;
sdlevent.window.event = SDL_WINDOWEVENT_EXPOSED;
SDL_PushEvent(&sdlevent);
}
} // namespace sk_app
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