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Merge pull request #67 from jhakonen/capture-on-activated-window

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Capture mouse cursor when clicking inactive window
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Cameron Gutman 2018-09-08 14:01:27 -07:00 committed by GitHub
commit 238681d72f
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1 changed files with 20 additions and 0 deletions
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20
app/streaming/session.cpp
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@ -929,6 +929,26 @@ void Session::exec(int displayOriginX, int displayOriginY)
}
case SDL_WINDOWEVENT:
// Capture mouse cursor when user actives the window by clicking on
// window's client area (borders and title bar excluded).
// Without this you would have to click the window twice (once to
// active it, second time to enable capture). With this you need to
// click it only once.
// By excluding window's borders and title bar out, lets user still
// interact with them without mouse capture kicking in.
if (event.window.event == SDL_WINDOWEVENT_FOCUS_GAINED) {
int mouseX, mouseY;
Uint32 mouseState = SDL_GetGlobalMouseState(&mouseX, &mouseY);
if (mouseState & SDL_BUTTON(SDL_BUTTON_LEFT)) {
int x, y, width, height;
SDL_GetWindowPosition(m_Window, &x, &y);
SDL_GetWindowSize(m_Window, &width, &height);
if (mouseX > x && mouseX < x+width && mouseY > y && mouseY < y+height) {
SDL_SetRelativeMouseMode(SDL_TRUE);
}
}
}
// Release mouse cursor when another window is activated (e.g. by using ALT+TAB).
// This lets user to interact with our window's title bar and with the buttons in it.
if (event.window.event == SDL_WINDOWEVENT_FOCUS_LOST) {