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[client] only recalculate scales on screen or guest resize

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This commit is contained in:
Geoffrey McRae 2017-12-01 13:42:58 +11:00
parent 9831de92e1
commit 8fdb86ae28
1 changed files with 62 additions and 52 deletions
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112
client/main.c
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@ -45,10 +45,8 @@ struct AppState
bool running;
bool started;
bool windowChanged;
int offsetX, offsetY;
int guestW, guestH;
SDL_Rect srcRect, dstRect;
float scaleX, scaleY;
SDL_Window * window;
@ -96,6 +94,40 @@ struct AppParams params =
.scaleMouseInput = true
};
inline void updatePositionInfo()
{
int w, h;
SDL_GetRendererOutputSize(state.renderer, &w, &h);
if (params.keepAspect)
{
const float srcAspect = (float)state.srcRect.h / (float)state.srcRect.w;
const float wndAspect = (float)h / (float)w;
if (wndAspect < srcAspect)
{
state.dstRect.w = (float)h / srcAspect;
state.dstRect.h = h;
state.dstRect.x = (w >> 1) - (state.dstRect.w >> 1);
}
else
{
state.dstRect.w = w;
state.dstRect.h = (float)w * srcAspect;
state.dstRect.y = (h >> 1) - (state.dstRect.h >> 1);
}
}
else
{
state.dstRect.x = 0;
state.dstRect.y = 0;
state.dstRect.w = w;
state.dstRect.h = h;
}
state.scaleX = (float)state.srcRect.h / (float)state.dstRect.h;
state.scaleY = (float)state.srcRect.w / (float)state.dstRect.w;
}
inline bool areFormatsSame(const struct KVMGFXHeader s1, const struct KVMGFXHeader s2)
{
return
@ -277,7 +309,11 @@ int renderThread(void * unused)
}
memcpy(&header, &newHeader, sizeof(header));
state.windowChanged = true;
state.srcRect.x = 0;
state.srcRect.y = 0;
state.srcRect.w = header.width;
state.srcRect.h = header.height;
updatePositionInfo();
}
//beyond this point DO NOT use state.shm for security
@ -291,36 +327,6 @@ int renderThread(void * unused)
break;
}
SDL_Rect dest;
dest.x = 0;
dest.y = 0;
SDL_GetWindowSize(state.window, &dest.w, &dest.h);
if (params.keepAspect)
{
const float texAspect = (float)header.height / (float)header.width;
const float scnAspect = (float)dest.h / (float)dest.w;
if (scnAspect < texAspect)
{
const int w = (float)dest.h / texAspect;
dest.x = (dest.w / 2) - (w / 2);
dest.w = w;
}
else
{
const int h = (float)dest.w * texAspect;
dest.y = (dest.h / 2) - (h / 2);
dest.h = h;
}
}
state.offsetX = dest.x;
state.offsetY = dest.y;
state.guestW = dest.w;
state.guestH = dest.h;
state.scaleX = (float)header.height / dest.h;
state.scaleY = (float)header.width / dest.w;
SDL_RenderClear(state.renderer);
if (state.hasBufferStorage)
{
@ -348,10 +354,10 @@ int renderThread(void * unused)
// draw the screen
glBegin(GL_TRIANGLE_STRIP);
glTexCoord2f(0.0f, 0.0f); glVertex2i(dest.x , dest.y );
glTexCoord2f(1.0f, 0.0f); glVertex2i(dest.x + dest.w, dest.y );
glTexCoord2f(0.0f, 1.0f); glVertex2i(dest.x , dest.y + dest.h);
glTexCoord2f(1.0f, 1.0f); glVertex2i(dest.x + dest.w, dest.y + dest.h);
glTexCoord2f(0.0f, 0.0f); glVertex2i(state.dstRect.x , state.dstRect.y );
glTexCoord2f(1.0f, 0.0f); glVertex2i(state.dstRect.x + state.dstRect.w, state.dstRect.y );
glTexCoord2f(0.0f, 1.0f); glVertex2i(state.dstRect.x , state.dstRect.y + state.dstRect.h);
glTexCoord2f(1.0f, 1.0f); glVertex2i(state.dstRect.x + state.dstRect.w, state.dstRect.y + state.dstRect.h);
glEnd();
glBindTexture(GL_TEXTURE_2D, 0);
@ -375,7 +381,7 @@ int renderThread(void * unused)
memcpySSE(texPixels[texIndex], pixels + newHeader.dataPos, texSize);
SDL_UnlockTexture(texture);
SDL_RenderCopy(state.renderer, texture, NULL, &dest);
SDL_RenderCopy(state.renderer, texture, NULL, &state.dstRect);
}
SDL_RenderPresent(state.renderer);
@ -574,10 +580,10 @@ int eventThread(void * arg)
case SDL_MOUSEMOTION:
{
if (
event.motion.x < state.offsetX ||
event.motion.x > state.offsetX + state.guestW ||
event.motion.y < state.offsetY ||
event.motion.y > state.offsetY + state.guestH
event.motion.x < state.dstRect.x ||
event.motion.x > state.dstRect.x + state.dstRect.w ||
event.motion.y < state.dstRect.y ||
event.motion.y > state.dstRect.y + state.dstRect.h
)
{
realignGuest = true;
@ -586,19 +592,18 @@ int eventThread(void * arg)
int x = 0;
int y = 0;
if (realignGuest || state.windowChanged)
if (realignGuest)
{
x = event.motion.x - state.offsetX;
y = event.motion.y - state.offsetY;
x = event.motion.x - state.dstRect.x;
y = event.motion.y - state.dstRect.y;
if (params.scaleMouseInput)
{
x *= state.scaleX;
y *= state.scaleY;
x = (float)x * state.scaleX;
y = (float)y * state.scaleY;
}
x -= state.shm->mouseX;
y -= state.shm->mouseY;
realignGuest = false;
state.windowChanged = false;
if (!spice_mouse_motion(x, y))
DEBUG_ERROR("SDL_MOUSEMOTION: failed to send message");
@ -612,8 +617,8 @@ int eventThread(void * arg)
{
if (params.scaleMouseInput)
{
x *= state.scaleX;
y *= state.scaleY;
x = (float)x * state.scaleX;
y = (float)y * state.scaleY;
}
if (!spice_mouse_motion(x, y))
{
@ -653,6 +658,11 @@ int eventThread(void * arg)
case SDL_WINDOWEVENT_ENTER:
realignGuest = true;
break;
case SDL_WINDOWEVENT_SIZE_CHANGED:
updatePositionInfo();
realignGuest = true;
break;
}
break;
}