isledecomp/isle-portable
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translate and scale touch coordinates to the viewport (#565)

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olebeck 2025-07-09 14:55:26 +02:00 committed by GitHub
parent b8e7c8f774
commit 4446aaaf53
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GPG Key ID: B5690EEEBB952194
3 changed files with 22 additions and 7 deletions
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3
ISLE/isleapp.cpp
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@ -428,6 +428,9 @@ SDL_AppResult SDL_AppEvent(void* appstate, SDL_Event* event)
case SDL_EVENT_MOUSE_MOTION:
case SDL_EVENT_MOUSE_BUTTON_DOWN:
case SDL_EVENT_MOUSE_BUTTON_UP:
case SDL_EVENT_FINGER_MOTION:
case SDL_EVENT_FINGER_DOWN:
case SDL_EVENT_FINGER_UP:
IDirect3DRMMiniwinDevice* device = GetD3DRMMiniwinDevice();
if (device && !device->ConvertEventToRenderCoordinates(event)) {
SDL_Log("Failed to convert event coordinates: %s", SDL_GetError());

24
miniwin/src/d3drm/d3drmdevice.cpp
View File

@ -150,14 +150,13 @@ ViewportTransform CalculateViewportTransform(int virtualW, int virtualH, int win
void Direct3DRMDevice2Impl::Resize()
{
int width, height;
SDL_GetWindowSizeInPixels(DDWindow, &width, &height);
SDL_GetWindowSizeInPixels(DDWindow, &m_windowWidth, &m_windowHeight);
#ifdef __3DS__
width = 320; // We are on the lower screen
height = 240;
m_windowWidth = 320; // We are on the lower screen
m_windowHeight = 240;
#endif
m_viewportTransform = CalculateViewportTransform(m_virtualWidth, m_virtualHeight, width, height);
m_renderer->Resize(width, height, m_viewportTransform);
m_viewportTransform = CalculateViewportTransform(m_virtualWidth, m_virtualHeight, m_windowWidth, m_windowHeight);
m_renderer->Resize(m_windowWidth, m_windowHeight, m_viewportTransform);
m_renderer->Clear(0, 0, 0);
for (int i = 0; i < m_viewports->GetSize(); i++) {
IDirect3DRMViewport* viewport;
@ -183,7 +182,18 @@ bool Direct3DRMDevice2Impl::ConvertEventToRenderCoordinates(SDL_Event* event)
event->motion.x = static_cast<Sint32>(x);
event->motion.y = static_cast<Sint32>(y);
break;
} break;
}
case SDL_EVENT_FINGER_MOTION:
case SDL_EVENT_FINGER_DOWN:
case SDL_EVENT_FINGER_UP: {
int rawX = event->tfinger.x * m_windowWidth;
int rawY = event->tfinger.y * m_windowHeight;
float x = (rawX - m_viewportTransform.offsetX) / m_viewportTransform.scale;
float y = (rawY - m_viewportTransform.offsetY) / m_viewportTransform.scale;
event->tfinger.x = x / m_virtualWidth;
event->tfinger.y = y / m_virtualHeight;
break;
}
}
return true;

2
miniwin/src/internal/d3drmdevice_impl.h
View File

@ -40,6 +40,8 @@ struct Direct3DRMDevice2Impl : public Direct3DRMObjectBaseImpl<IDirect3DRMDevice
private:
void Resize();
int m_windowWidth;
int m_windowHeight;
uint32_t m_virtualWidth;
uint32_t m_virtualHeight;
ViewportTransform m_viewportTransform;