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Corrected window resize for WIN32 target.

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clears display and letterboxes results
This commit is contained in:
MonstersGoBoom
2023-04-03 08:37:33 -04:00
parent 2adefcbbeb
commit a78ff173d1
1 changed files with 36 additions and 16 deletions
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52
fenster.h
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@ -22,6 +22,8 @@ struct fenster {
const char *title;
const int width;
const int height;
int display_width;
int display_height;
uint32_t *buf;
int keys[256]; /* keys are mostly ASCII, but arrows are 17..20 */
int mod; /* mod is 4 bits mask, ctrl=1, shift=2, alt=4, meta=8 */
@ -165,6 +167,9 @@ FENSTER_API int fenster_loop(struct fenster *f) {
return 0;
}
#elif defined(_WIN32)
#ifndef MIN
#define MIN(a, b) ((a)<(b)? (a) : (b))
#endif
// clang-format off
static const uint8_t FENSTER_KEYCODES[] = {0,27,49,50,51,52,53,54,55,56,57,48,45,61,8,9,81,87,69,82,84,89,85,73,79,80,91,93,10,0,65,83,68,70,71,72,74,75,76,59,39,96,0,92,90,88,67,86,66,78,77,44,46,47,0,0,0,32,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,17,3,0,20,0,19,0,5,18,4,26,127};
// clang-format on
@ -173,23 +178,38 @@ static LRESULT CALLBACK fenster_wndproc(HWND hwnd, UINT msg, WPARAM wParam,
struct fenster *f = (struct fenster *)GetWindowLongPtr(hwnd, GWLP_USERDATA);
switch (msg) {
case WM_PAINT: {
PAINTSTRUCT ps;
HDC hdc = BeginPaint(hwnd, &ps);
HDC memdc = CreateCompatibleDC(hdc);
HBITMAP hbmp = CreateCompatibleBitmap(hdc, f->width, f->height);
HBITMAP oldbmp = SelectObject(memdc, hbmp);
BITMAPINFO bi = {{sizeof(bi), f->width, -f->height, 1, 32, BI_RGB}};
bi.bmiColors[0].rgbRed = 0xff;
bi.bmiColors[1].rgbGreen = 0xff;
bi.bmiColors[2].rgbBlue = 0xff;
SetDIBitsToDevice(memdc, 0, 0, f->width, f->height, 0, 0, 0, f->height,
f->buf, (BITMAPINFO *)&bi, DIB_RGB_COLORS);
BitBlt(hdc, 0, 0, f->width, f->height, memdc, 0, 0, SRCCOPY);
SelectObject(memdc, oldbmp);
DeleteObject(hbmp);
DeleteDC(memdc);
EndPaint(hwnd, &ps);
float scale = MIN((float)f->display_width/f->width, (float)f->display_height/f->height);
BITMAPINFO bmi = {
.bmiHeader.biSize = sizeof(BITMAPINFOHEADER),
.bmiHeader.biBitCount = 32,
.bmiHeader.biCompression = BI_RGB,
.bmiHeader.biPlanes = 1,
.bmiHeader.biWidth = f->width,
.bmiHeader.biHeight = -f->height
};
int xorigin,yorigin,draw_width,draw_height;
draw_width = f->width*scale;
draw_height = f->height*scale;
xorigin=(f->display_width-draw_width)/2;
yorigin=(f->display_height-draw_height)/2;
StretchDIBits(GetDC(hwnd),
xorigin, yorigin, draw_width, draw_height,
0, 0, f->width, f->height,
f->buf, &bmi, DIB_RGB_COLORS, SRCCOPY);
ValidateRect(hwnd,0);
} break;
case WM_SIZE:
{
f->display_width = LOWORD(lParam);
f->display_height = HIWORD(lParam);
PAINTSTRUCT ps;
HDC hdc = BeginPaint(hwnd, &ps);
HBRUSH brush = CreateSolidBrush(RGB(0, 0, 0));
FillRect(hdc, &ps.rcPaint, brush);
DeleteObject(brush);
EndPaint(hwnd, &ps);
RedrawWindow(hwnd, 0, 0, RDW_INVALIDATE | RDW_UPDATENOW);
} break;
case WM_CLOSE:
DestroyWindow(hwnd);
break;