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| #include <tools/fiddle/examples.h>
#include <tools/fiddle/fiddle_main.h>
#include <Windows.h>
#pragma comment(lib, "skia.lib")
#pragma comment(lib, "skshaper.lib")
#pragma comment(lib, "skparagraph.lib")
#pragma comment(lib, "skottie.lib")
#pragma comment(lib, "sksg.lib")
#pragma comment(lib, "opengl32.lib")
static SkCanvas* prepare_canvas(SkCanvas* canvas) {
canvas->clear(SK_ColorLTGRAY);
return canvas;
}
REG_FIDDLE(Canvas_drawLine_2, 256, 256, false, 0) {
void draw(SkCanvas * canvas) {
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(0xFF9a67be);
paint.setStrokeWidth(1);
canvas->drawLine({ 50, 120 }, { 32, 160 }, paint);
}
}
void draw_window(HWND hWnd, HDC hdc)
{
RECT rc;
GetClientRect(hWnd, &rc);
int width = rc.right - rc.left;
int height = rc.bottom - rc.top;
sk_sp<SkColorSpace> colorSpace = SkColorSpace::MakeSRGBLinear();
SkImageInfo info = SkImageInfo::Make(width, height, kN32_SkColorType,
kPremul_SkAlphaType, colorSpace);
auto rasterSurface = SkSurfaces::Raster(info);
if (rasterSurface) {
SkCanvas* canvas = rasterSurface->getCanvas();
example_Canvas_drawLine_2::draw(prepare_canvas(canvas));
canvas->flush();
SkPixmap pixmap;
if (rasterSurface->peekPixels(&pixmap)) {
BITMAPINFO bmi;
memset(&bmi, 0, sizeof(bmi));
bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmi.bmiHeader.biWidth = pixmap.width();
bmi.bmiHeader.biHeight = -pixmap.height();
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biBitCount = 32;
bmi.bmiHeader.biCompression = BI_RGB;
SetDIBitsToDevice(hdc, 0, 0, pixmap.width(), pixmap.height(), 0, 0, 0, pixmap.height(),
pixmap.addr(), &bmi, DIB_RGB_COLORS);
}
}
}
bool register_window_class(const char* class_name, WNDPROC wndproc)
{
WNDCLASSEXA wc;
std::memset(&wc, 0, sizeof(wc));
wc.style = CS_VREDRAW | CS_HREDRAW;
wc.lpfnWndProc = wndproc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = GetModuleHandleA(nullptr);
wc.hIcon = NULL;
wc.hIconSm = NULL;
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = reinterpret_cast<HBRUSH>(GetStockObject(WHITE_BRUSH));
wc.lpszMenuName = "";
wc.lpszClassName = class_name;
wc.cbSize = sizeof(wc);
return !!RegisterClassExA(&wc);
}
HWND create_window(const char* class_name)
{
HWND hWnd = CreateWindowA(
class_name,
" ",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
GetModuleHandle(NULL),
(LPVOID)nullptr
);
ShowWindow(hWnd, SW_NORMAL);
UpdateWindow(hWnd);
return hWnd;
}
LRESULT CALLBACK internal_window_callback(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
HDC hdc;
PAINTSTRUCT ps;
switch (uMsg) {
case WM_PAINT:
hdc = BeginPaint(hWnd, &ps);
draw_window(hWnd, hdc);
EndPaint(hWnd, &ps);
return 0;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hWnd, uMsg, wParam, lParam);
}
int get_message_loop()
{
MSG msg;
while (GetMessage(&msg, NULL, 0, 0)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return (int)msg.wParam;
}
int main(int argc, char** argv)
{
srand(0);
register_window_class("__skia_demo_window_class__", internal_window_callback);
create_window("__skia_demo_window_class__");
return get_message_loop();
}
|
