[Mesa-dev] [PATCH] wgl: Add wglUseFontOutlines sample.

[Brian Paul]

Reviewed-by: Brian Paul <brianp at vmware.com>

On 06/22/2017 04:35 PM, Jose Fonseca wrote:
> From: Jose Fonseca <jose.r.fonseca at gmail.com>
>
> ---
>   src/wgl/CMakeLists.txt                  |   6 +-
>   src/wgl/{wglfont.c => wglfontbitmaps.c} |   0
>   src/wgl/wglfontoutlines.c               | 147 ++++++++++++++++++++++++++++++++
>   3 files changed, 151 insertions(+), 2 deletions(-)
>   rename src/wgl/{wglfont.c => wglfontbitmaps.c} (100%)
>   create mode 100644 src/wgl/wglfontoutlines.c
>
> diff --git a/src/wgl/CMakeLists.txt b/src/wgl/CMakeLists.txt
> index e4a72c14..4c6e75e3 100644
> --- a/src/wgl/CMakeLists.txt
> +++ b/src/wgl/CMakeLists.txt
> @@ -16,7 +16,8 @@ set_target_properties (wgl_sharedtex_mt PROPERTIES OUTPUT_NAME sharedtex_mt)
>   add_executable (wglinfo wglinfo.c ${CMAKE_SOURCE_DIR}/src/xdemos/glinfo_common.c)
>   add_executable (wglcontext wglcontext.c)
>   add_executable (wincopy WIN32 wincopy.c wglutil.c)
> -add_executable (wglfont wglfont.c)
> +add_executable (wglfontbitmaps wglfontbitmaps.c)
> +add_executable (wglfontoutlines wglfontoutlines.c)
>   add_executable (wglgears wglgears.c)
>
>   install (
> @@ -25,7 +26,8 @@ install (
>   		wgl_sharedtex_mt
>   		wglinfo
>   		wglcontext
> -		wglfont
> +		wglfontbitmaps
> +		wglfontoutlines
>   		wglgears
>   		wincopy
>   	DESTINATION wgl)
> diff --git a/src/wgl/wglfont.c b/src/wgl/wglfontbitmaps.c
> similarity index 100%
> rename from src/wgl/wglfont.c
> rename to src/wgl/wglfontbitmaps.c
> diff --git a/src/wgl/wglfontoutlines.c b/src/wgl/wglfontoutlines.c
> new file mode 100644
> index 00000000..bfc24b4b
> --- /dev/null
> +++ b/src/wgl/wglfontoutlines.c
> @@ -0,0 +1,147 @@
> +/*
> + * Copyright (C) 2016, VMware, Inc.
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included
> + * in all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
> + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
> + * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
> + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
> + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
> + */
> +
> +#include <windows.h>
> +#include <stdlib.h>
> +#include <GL/gl.h>
> +
> +int
> +main(int argc, char *argv[])
> +{
> +   WNDCLASS wc;
> +   HWND hwnd;
> +   HDC hdc;
> +   PIXELFORMATDESCRIPTOR pfd;
> +   int iPixelFormat;
> +   HGLRC hglrc;
> +
> +   ZeroMemory(&wc, sizeof wc);
> +   wc.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
> +   wc.lpfnWndProc = DefWindowProc;
> +   wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
> +   wc.hCursor = LoadCursor(NULL, IDC_ARROW);
> +   wc.hbrBackground = (HBRUSH) (COLOR_BTNFACE + 1);
> +   wc.lpszClassName = "wglfont";
> +
> +   if (!RegisterClass(&wc)) {
> +      abort();
> +   }
> +
> +   hwnd = CreateWindowEx(0,
> +                         wc.lpszClassName,
> +                         "wglfont",
> +                         WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_TILEDWINDOW,
> +                         CW_USEDEFAULT, CW_USEDEFAULT, 512, 512,
> +                         NULL, NULL,
> +                         wc.hInstance,
> +                         NULL);
> +   if (!hwnd) {
> +      abort();
> +   }
> +
> +   hdc = GetDC(hwnd);
> +   if (!hdc) {
> +      abort();
> +   }
> +
> +   ZeroMemory(&pfd, sizeof pfd);
> +   pfd.nSize = sizeof pfd;
> +   pfd.nVersion = 1;
> +   pfd.dwFlags = PFD_DOUBLEBUFFER | PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
> +   pfd.iPixelType = PFD_TYPE_RGBA;
> +   pfd.cColorBits = 24;
> +   pfd.cDepthBits = 0;
> +   pfd.iLayerType = PFD_MAIN_PLANE;
> +
> +   iPixelFormat = ChoosePixelFormat(hdc, &pfd);
> +   if (!iPixelFormat) {
> +      abort();
> +   }
> +
> +   if (!SetPixelFormat(hdc, iPixelFormat, &pfd)) {
> +      abort();
> +   }
> +
> +   hglrc = wglCreateContext(hdc);
> +   if (!hglrc) {
> +      abort();
> +   }
> +
> +   wglMakeCurrent(hdc, hglrc);
> +
> +   glClearColor(0.0, 0.0, 0.0, 1.0);
> +   glClear(GL_COLOR_BUFFER_BIT);
> +
> +   HFONT hFont;
> +   hFont = CreateFont(72,			// Height Of Font
> +                      0,			// Width Of Font
> +                      0,			// Angle Of Escapement
> +                      0,			// Orientation Angle
> +                      FW_NORMAL,		// Font Weight
> +                      FALSE,			// Italic
> +                      FALSE,			// Underline
> +                      FALSE,			// Strikeout
> +                      ANSI_CHARSET,		// Character Set Identifier
> +                      OUT_TT_PRECIS,		// Output Precision
> +                      CLIP_DEFAULT_PRECIS,	// Clipping Precision
> +                      ANTIALIASED_QUALITY,	// Output Quality
> +                      FF_DONTCARE|DEFAULT_PITCH,	// Family And Pitch
> +                      "Arial");			// Font Name
> +   if (!hFont) {
> +      abort();
> +   }
> +
> +   SelectObject(hdc, hFont);
> +
> +   GLYPHMETRICSFLOAT agmf[256];
> +   wglUseFontOutlinesA(hdc, 0, 256, 1000, 0.0f, 1.0f, WGL_FONT_POLYGONS, agmf);
> +
> +   glShadeModel(GL_SMOOTH);
> +
> +   glCullFace(GL_BACK);
> +   glEnable(GL_CULL_FACE);
> +
> +   glEnable(GL_LIGHT0);
> +   glEnable(GL_LIGHTING);
> +   glEnable(GL_COLOR_MATERIAL);
> +   glColor3f(1.0f, 0.5, 0.0);
> +
> +   glTranslatef(-0.8f, -0.0f, -1.0f);
> +   glScalef(0.25f, 0.25f, 0.25f);
> +
> +   glListBase(1000);
> +
> +   glCallLists(12, GL_UNSIGNED_BYTE, "Hello World!");
> +
> +   SwapBuffers(hdc);
> +
> +   Sleep(1000);
> +
> +   wglMakeCurrent(NULL, NULL);
> +
> +   wglDeleteContext(hglrc);
> +
> +   ReleaseDC(hwnd, hdc);
> +
> +   DestroyWindow(hwnd);
> +
> +   return 0;
> +}
>