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C library for Windows for easy-to-use 2D painting with Direct2D or, on older Windows versions, GDI+.

License: MIT License

CMake 1.07% C 98.93%

direct2d gdi-plus windows graphics-libraries c mit-license

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windrawlib's Issues

Can we please have this in one VS2019 solution?

For WIN10 PRO

msvc 2010 cannot be initialized using address of automatic variable 'user_locale'

Hi,
win/wdl/font.c(53)
warning C4221: nonstandard extension used : 'locales' : cannot be initialized using address of automatic variable 'user_locale'

Is secure ignore this?
Best regards,

Need suggestion for wdDrawString performance increase

Hello and thanks for this library. Though I am an experienced software engineer, this is my first time using Windows graphics. My app needs to render a large window pixel by pixel at 60 frames per second and this direct2d library is getting the job done. The problem is that after the frame is rendered, it needs to be overlayed with many text labels. The text never changes. Right now, I am calling wdDrawString many times for each frame. This makes 60 frames per second difficult to achieve. Because the text never changes, it seems like there should be a way to prepare it one time, and reuse it over and over. But I do not see how to do that. If I could prepare the text overlay once and convert it to a bit map form, then I could merged it into the rendered bitmap efficiently.

wdBitBltCachedImage() crashes.

When using Direct2D backend, calling wdBitBltCachedImage() usually result in a crash in dummy_ID2D1Bitmap_GetPixelSize()

Cannot build with MinGW-w64

The compilation fails under MingGW-w64 (stock install):

d:\Work\Code\windrawlib>mingw32-make
[  3%] Building C object src/CMakeFiles/windrawlib.dir/backend-d2d.c.obj
[  7%] Building C object src/CMakeFiles/windrawlib.dir/backend-dwrite.c.obj
[ 11%] Building C object src/CMakeFiles/windrawlib.dir/backend-gdix.c.obj
[ 14%] Building C object src/CMakeFiles/windrawlib.dir/backend-wic.c.obj
[ 18%] Building C object src/CMakeFiles/windrawlib.dir/bitblt.c.obj
D:\Work\Code\windrawlib\src\bitblt.c: In function 'wdBitBltImage':
D:\Work\Code\windrawlib\src\bitblt.c:52:85: error: macro "ID2D1RenderTarget_CreateBitmapFromWicBitmap" passed 4 arguments, but takes just 3
         hr = ID2D1RenderTarget_CreateBitmapFromWicBitmap(c->target, bitmap, NULL, &b);
                                                                                     ^
D:\Work\Code\windrawlib\src\bitblt.c:52:14: error: 'ID2D1RenderTarget_CreateBitmapFromWicBitmap' undeclared (first use in this function)
         hr = ID2D1RenderTarget_CreateBitmapFromWicBitmap(c->target, bitmap, NULL, &b);
              ^
D:\Work\Code\windrawlib\src\bitblt.c:52:14: note: each undeclared identifier is reported only once for each function it appears in
D:\Work\Code\windrawlib\src\bitblt.c:37:27: warning: unused variable 'bitmap' [-Wunused-variable]
         IWICBitmapSource* bitmap = (IWICBitmapSource*) hImage;
                           ^
src\CMakeFiles\windrawlib.dir\build.make:162: recipe for target 'src/CMakeFiles/windrawlib.dir/bitblt.c.obj' failed
mingw32-make[2]: *** [src/CMakeFiles/windrawlib.dir/bitblt.c.obj] Error 1
CMakeFiles\Makefile2:84: recipe for target 'src/CMakeFiles/windrawlib.dir/all' failed
mingw32-make[1]: *** [src/CMakeFiles/windrawlib.dir/all] Error 2
Makefile:82: recipe for target 'all' failed
mingw32-make: *** [all] Error 2

MinGW-w64/gcc version used:

d:\Work\Code\windrawlib>gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=c:/dev/mingw-w64/x86_64-5.3.0-win32-seh-rt_v4-rev0/mingw64/bin/../libexec/gcc/x86_64-w64-mingw32/5.3.0/lto-wrapper.exe
Target: x86_64-w64-mingw32
Configured with: ../../../src/gcc-5.3.0/configure --host=x86_64-w64-mingw32 --build=x86_64-w64-mingw32 --target=x86_64-w64-mingw32 --prefix=/mingw64 -
-with-sysroot=/c/mingw530/x86_64-530-win32-seh-rt_v4-rev0/mingw64 --with-gxx-include-dir=/mingw64/x86_64-w64-mingw32/include/c++ --enable-shared --ena
ble-static --disable-multilib --enable-languages=c,c++,fortran,lto --enable-libstdcxx-time=yes --enable-threads=win32 --enable-libgomp --enable-libato
mic --enable-lto --enable-graphite --enable-checking=release --enable-fully-dynamic-string --enable-version-specific-runtime-libs --disable-isl-versio
n-check --disable-libstdcxx-pch --disable-libstdcxx-debug --enable-bootstrap --disable-rpath --disable-win32-registry --disable-nls --disable-werror -
-disable-symvers --with-gnu-as --with-gnu-ld --with-arch=nocona --with-tune=core2 --with-libiconv --with-system-zlib --with-gmp=/c/mingw530/prerequisi
tes/x86_64-w64-mingw32-static --with-mpfr=/c/mingw530/prerequisites/x86_64-w64-mingw32-static --with-mpc=/c/mingw530/prerequisites/x86_64-w64-mingw32-
static --with-isl=/c/mingw530/prerequisites/x86_64-w64-mingw32-static --with-pkgversion='x86_64-win32-seh-rev0, Built by MinGW-W64 project' --with-bug
url=http://sourceforge.net/projects/mingw-w64 CFLAGS='-O2 -pipe -I/c/mingw530/x86_64-530-win32-seh-rt_v4-rev0/mingw64/opt/include -I/c/mingw530/prereq
uisites/x86_64-zlib-static/include -I/c/mingw530/prerequisites/x86_64-w64-mingw32-static/include' CXXFLAGS='-O2 -pipe -I/c/mingw530/x86_64-530-win32-s
eh-rt_v4-rev0/mingw64/opt/include -I/c/mingw530/prerequisites/x86_64-zlib-static/include -I/c/mingw530/prerequisites/x86_64-w64-mingw32-static/include
' CPPFLAGS= LDFLAGS='-pipe -L/c/mingw530/x86_64-530-win32-seh-rt_v4-rev0/mingw64/opt/lib -L/c/mingw530/prerequisites/x86_64-zlib-static/lib -L/c/mingw
530/prerequisites/x86_64-w64-mingw32-static/lib '
Thread model: win32
gcc version 5.3.0 (x86_64-win32-seh-rev0, Built by MinGW-W64 project)

wdDrawString Vertical Center Align (like Button text)

DirectWrite:
SetParagraphAlignment(DWRITE_PARAGRAPH_ALIGNMENT_CENTER);

but how to implement same feature using GDI+?

StrokeStyles: Dots not painted in D2D backend.

@antonioscuri

For some reason, dots are not painted in the D2D backend:

Dotted style implies no painting. The styles mixing dashes and dots paint just the dashes.
Any idea what can be the culprit?

Create canvas with HDC by GetDC and GetWindowDC counld't destroy resources

My code:

void effects(...) {
    ...
    dc = GetDC(hwnd);
    canvas = wdCreateCanvasWithHDC(dc, &rect, 0);
    wdBeginPaint(canvas);

    for (int i = 0; i < 20; i++) {
        brush = wdCreateSolidBrush(canvas, WD_RGB(0,0,0));
        wdDestroyBrush(brush);
    }
    
    wdEndPaint(canvas);
    wdDestroyCanvas(canvas);
}

The function is called, memory increase by time, the brushes and other resources (from windrawlib) are not destroyed.
This function was on another thread, I've changed D2D1 Factory creating flag to multithreaded (0x1), but got the same. I've turned to main thread, no difference.

StrokeStyles: Antialiasing & GDI+ backend

@antonioscuri

With GDI+ backend, anti-aliasing causes bad artifacts, especially with small stroke widths (1.0f):

It can be worked around by applying some 0.5f offset corrections, for example for the horizontal lines here, I have added +0.5f to its X coordinates:

However that can be tricky for some other paint functions, e.g. wdDrawRectStyled(): I was not able to paint a square with wdDrawRect() where it would help for all its lines at the same time...

IMHO the ideal case would be, that when painting just horizontal or vertical lines, and using coordinates placing both line ends exactly into pixel grid (i.e. that there are no anti-aliasing needed for solid line), then all the dashes and dots for the default patterns (or ideally even custom ones, if they use just integers in its pattern) would also fit exactly into pixel grid.

Could maybe GdipGetPenDashOffset() be used to achieve that? Or any other idea?

mity / windrawlib Goto Github PK

windrawlib's People

Contributors

Stargazers

Watchers

Forkers

windrawlib's Issues

Can we please have this in one VS2019 solution?

msvc 2010 cannot be initialized using address of automatic variable 'user_locale'

Need suggestion for wdDrawString performance increase

wdBitBltCachedImage() crashes.

Cannot build with MinGW-w64

wdDrawString Vertical Center Align (like Button text)

StrokeStyles: Dots not painted in D2D backend.

Create canvas with HDC by GetDC and GetWindowDC counld't destroy resources

StrokeStyles: Antialiasing & GDI+ backend

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