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implemented nk_create_image and nk_delete_image

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This commit is contained in:
FraKtus 2017-06-04 11:34:42 +02:00
parent 3debbd2104
commit 042cd078ec
1 changed files with 76 additions and 1 deletions
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77
demo/gdi/nuklear_gdi.h
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@ -57,6 +57,78 @@ static struct {
struct nk_context ctx;
} gdi;
static void
nk_create_image(struct nk_image * image, const char * frame_buffer, const int width, const int height)
{
if (image && frame_buffer && (width > 0) && (height > 0))
{
image->w = width;
image->h = height;
image->region[0] = 0;
image->region[1] = 0;
image->region[2] = width;
image->region[3] = height;
INT row = ((width * 3 + 3) & ~3);
BITMAPINFO bi = { 0 };
bi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bi.bmiHeader.biWidth = width;
bi.bmiHeader.biHeight = height;
bi.bmiHeader.biPlanes = 1;
bi.bmiHeader.biBitCount = 24;
bi.bmiHeader.biCompression = BI_RGB;
bi.bmiHeader.biSizeImage = row * height;
LPBYTE lpBuf, pb = NULL;
HBITMAP hbm = CreateDIBSection(NULL, &bi, DIB_RGB_COLORS, (void**)&lpBuf, NULL, 0);
pb = lpBuf + row * height;
unsigned char * src = (unsigned char *)frame_buffer;
for (int v = 0; v<height; v++)
{
pb -= row;
for (int i = 0; i < row; i += 3)
{
pb[i + 0] = src[0];
pb[i + 1] = src[1];
pb[i + 2] = src[2];
src += 3;
}
}
SetDIBits(NULL, hbm, 0, height, lpBuf, &bi, DIB_RGB_COLORS);
image->handle.ptr = hbm;
}
}
static void
nk_delete_image(struct nk_image * image)
{
if (image && image->handle.id != 0)
{
HBITMAP hbm = image->handle.ptr;
DeleteObject(hbm);
memset(image, 0, sizeof(struct nk_image));
}
}
static void
nk_gdi_draw_image(short x, short y, unsigned short w, unsigned short h,
struct nk_image img, struct nk_color col)
{
HBITMAP hbm = img.handle.ptr;
HDC hDCBits;
BITMAP bitmap;
if (!gdi.memory_dc || !hbm)
return;
hDCBits = CreateCompatibleDC(gdi.memory_dc);
GetObject(hbm, sizeof(BITMAP), (LPSTR)&bitmap);
SelectObject(hDCBits, hbm);
StretchBlt(gdi.memory_dc, x, y, w, h, hDCBits, 0, 0, bitmap.bmWidth, bitmap.bmHeight, SRCCOPY);
DeleteDC(hDCBits);
}
static COLORREF
convert_color(struct nk_color c)
{
@ -752,7 +824,10 @@ nk_gdi_render(struct nk_color clear)
q->end, q->line_thickness, q->color);
} break;
case NK_COMMAND_RECT_MULTI_COLOR:
case NK_COMMAND_IMAGE:
case NK_COMMAND_IMAGE: {
const struct nk_command_image *i = (const struct nk_command_image *)cmd;
nk_gdi_draw_image(i->x, i->y, i->w, i->h, i->img, i->col);
} break;
case NK_COMMAND_ARC:
case NK_COMMAND_ARC_FILLED:
default: break;