mirror of
https://github.com/reactos/reactos.git
synced 2024-07-17 01:46:10 +00:00
added tests for StretchBlt, PatBlt and BitBlt by Damon Chandler
svn path=/trunk/; revision=3652
This commit is contained in:
Steven Edwards
parent
95bb94d117
commit
a42476b9fb
138
reactos/apps/tests/bitblt/bitblt.cpp
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138
reactos/apps/tests/bitblt/bitblt.cpp
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@ -0,0 +1,138 @@
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// ------------------------------------------------------------------
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// Windows 2000 Graphics API Black Book
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// Chapter 1 - Listing 1.3 (BitBlt Bitmap Rendering Demo)
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//
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// Created by Damon Chandler <dmc27@ee.cornell.edu>
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// Updates can be downloaded at: <www.coriolis.com>
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//
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// Please do not hesistate to e-mail me at dmc27@ee.cornell.edu
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// if you have any questions about this code.
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// ------------------------------------------------------------------
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//>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
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#include <windows.h>
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//<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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HINSTANCE HInst;
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const char* WndClassName = "GMainWnd";
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LRESULT CALLBACK MainWndProc(HWND HWnd, UINT Msg, WPARAM WParam,
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LPARAM LParam);
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int APIENTRY WinMain(HINSTANCE HInstance, HINSTANCE HPrevInstance,
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LPTSTR lpCmdLine, int nCmdShow)
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{
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HInst = HInstance;
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WNDCLASS wc;
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memset(&wc, 0, sizeof(WNDCLASS));
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wc.style = CS_VREDRAW | CS_HREDRAW | CS_DBLCLKS;
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wc.lpfnWndProc = MainWndProc;
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wc.hInstance = HInstance;
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wc.hCursor = LoadCursor(NULL, IDC_ARROW);
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wc.hbrBackground = reinterpret_cast<HBRUSH>(COLOR_BTNFACE + 1);
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wc.lpszClassName = WndClassName;
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if (RegisterClass(&wc))
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{
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HWND HWnd =
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CreateWindow(
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WndClassName, TEXT("BitBlt Bitmap Rendering Demo"),
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WS_OVERLAPPED | WS_SYSMENU | WS_CAPTION |
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WS_VISIBLE | WS_CLIPSIBLINGS,
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0, 0, 220, 230,
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NULL, NULL, HInst, NULL
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);
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if (HWnd)
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{
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ShowWindow(HWnd, nCmdShow);
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UpdateWindow(HWnd);
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MSG msg;
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while (GetMessage(&msg, NULL, 0, 0))
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{
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TranslateMessage(&msg);
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DispatchMessage(&msg);
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}
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}
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}
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return 0;
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}
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//------------------------------------------------------------------
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// image related
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BITMAP bmp;
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LPCSTR filename = TEXT("lena.bmp");
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HDC HMemDC = NULL;
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HBITMAP HOldBmp = NULL;
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LRESULT CALLBACK MainWndProc(HWND HWnd, UINT Msg, WPARAM WParam,
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LPARAM LParam)
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{
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switch (Msg)
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{
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case WM_CREATE:
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{
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// create a memory DC
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HMemDC = CreateCompatibleDC(NULL);
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if (HMemDC)
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{
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// load a bitmap from file
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HBITMAP HBmp =
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static_cast<HBITMAP>(
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LoadImage(HInst, filename, IMAGE_BITMAP,
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0, 0, LR_LOADFROMFILE)
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);
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if (HBmp)
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{
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// extract dimensions of the bitmap
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GetObject(HBmp, sizeof(BITMAP), &bmp);
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// associate the bitmap with the memory DC
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HOldBmp = static_cast<HBITMAP>(
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SelectObject(HMemDC, HBmp)
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);
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}
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}
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}
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case WM_PAINT:
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{
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PAINTSTRUCT ps;
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const HDC Hdc = BeginPaint(HWnd, &ps);
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try
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{
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//
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// TODO: add palette support (see Chapter 9)...
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//
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BitBlt(Hdc, 20, 15,
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bmp.bmWidth, bmp.bmHeight,
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HMemDC, 0, 0,
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SRCCOPY);
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}
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catch (...)
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{
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EndPaint(HWnd, &ps);
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}
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EndPaint(HWnd, &ps);
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break;
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}
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case WM_DESTROY:
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{
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// clean up
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DeleteObject(SelectObject(HMemDC, HOldBmp));
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DeleteDC(HMemDC);
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PostQuitMessage(0);
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return 0;
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}
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}
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return DefWindowProc(HWnd, Msg, WParam, LParam);
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}
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//------------------------------------------------------------------
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BIN
reactos/apps/tests/bitblt/lena.bmp
Normal file
BIN
reactos/apps/tests/bitblt/lena.bmp
Normal file
Binary file not shown.
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After Width: | Height: | Size: 87 KiB |
66
reactos/apps/tests/bitblt/makefile
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66
reactos/apps/tests/bitblt/makefile
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@ -0,0 +1,66 @@
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# Makefile - Proj_Listing1_5.dsp
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ifndef CFG
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CFG=Proj_Listing1_5 - Win32 Debug
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endif
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CC=gcc
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CFLAGS=
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CXX=g++
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CXXFLAGS=$(CFLAGS)
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RC=windres -O COFF
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ifeq "$(CFG)" "Proj_Listing1_5 - Win32 Release"
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CFLAGS+=-fexceptions -O2 -DWIN32 -DNDEBUG -D_WINDOWS -D_MBCS -W
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LD=$(CXX) $(CXXFLAGS)
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LDFLAGS=
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LDFLAGS+=-Wl,--subsystem,windows
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LIBS+=-lkernel32 -luser32 -lgdi32
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else
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ifeq "$(CFG)" "Proj_Listing1_5 - Win32 Debug"
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CFLAGS+=-fexceptions -g -O0 -DWIN32 -D_DEBUG -D_WINDOWS -D_MBCS -W
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LD=$(CXX) $(CXXFLAGS)
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LDFLAGS=
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LDFLAGS+=-Wl,--subsystem,windows
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LIBS+=-lkernel32 -luser32 -lgdi32
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endif
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endif
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ifndef TARGET
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TARGET=bitblt.exe
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endif
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.PHONY: all
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all: $(TARGET)
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%.o: %.c
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$(CC) $(CFLAGS) $(CPPFLAGS) -o $@ -c $<
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%.o: %.cpp
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$(CXX) $(CXXFLAGS) $(CPPFLAGS) -o $@ -c $<
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%.res: %.rc
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$(RC) $(CPPFLAGS) -o $@ -i $<
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SOURCE_FILES= \
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bitblt.cpp
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HEADER_FILES=
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RESOURCE_FILES=
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SRCS=$(SOURCE_FILES) $(HEADER_FILES) $(RESOURCE_FILES)
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OBJS=$(patsubst %.rc,%.res,$(patsubst %.cpp,%.o,$(patsubst %.c,%.o,$(filter %.c %.cpp %.rc,$(SRCS)))))
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$(TARGET): $(OBJS)
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$(LD) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)
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.PHONY: clean
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clean:
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-del $(OBJS) $(TARGET)
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.PHONY: depends
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depends:
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-$(CXX) $(CXXFLAGS) $(CPPFLAGS) -MM $(filter %.c %.cpp,$(SRCS)) > Proj_Listing1_5.dep
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-include Proj_Listing1_5.dep
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BIN
reactos/apps/tests/patblt/Penguin.bmp
Normal file
BIN
reactos/apps/tests/patblt/Penguin.bmp
Normal file
Binary file not shown.
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After Width: | Height: | Size: 104 KiB |
66
reactos/apps/tests/patblt/makefile
Normal file
66
reactos/apps/tests/patblt/makefile
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@ -0,0 +1,66 @@
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# Makefile - Proj_Listing2_1.dsp
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ifndef CFG
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CFG=Proj_Listing2_1 - Win32 Debug
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endif
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CC=gcc
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CFLAGS=
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CXX=g++
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CXXFLAGS=$(CFLAGS)
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RC=windres -O COFF
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ifeq "$(CFG)" "Proj_Listing2_1 - Win32 Release"
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CFLAGS+=-fexceptions -O2 -DWIN32 -DNDEBUG -D_WINDOWS -D_MBCS -W
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LD=$(CXX) $(CXXFLAGS)
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LDFLAGS=
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LDFLAGS+=-Wl,--subsystem,windows
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LIBS+=-lkernel32 -luser32 -lgdi32
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else
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ifeq "$(CFG)" "Proj_Listing2_1 - Win32 Debug"
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CFLAGS+=-fexceptions -g -O0 -DWIN32 -D_DEBUG -D_WINDOWS -D_MBCS -W
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LD=$(CXX) $(CXXFLAGS)
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LDFLAGS=
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LDFLAGS+=-Wl,--subsystem,windows
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LIBS+=-lkernel32 -luser32 -lgdi32
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endif
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endif
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ifndef TARGET
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TARGET=patblt.exe
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endif
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.PHONY: all
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all: $(TARGET)
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%.o: %.c
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$(CC) $(CFLAGS) $(CPPFLAGS) -o $@ -c $<
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%.o: %.cpp
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$(CXX) $(CXXFLAGS) $(CPPFLAGS) -o $@ -c $<
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%.res: %.rc
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$(RC) $(CPPFLAGS) -o $@ -i $<
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SOURCE_FILES= \
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patblt.cpp
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HEADER_FILES=
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RESOURCE_FILES=
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SRCS=$(SOURCE_FILES) $(HEADER_FILES) $(RESOURCE_FILES)
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OBJS=$(patsubst %.rc,%.res,$(patsubst %.cpp,%.o,$(patsubst %.c,%.o,$(filter %.c %.cpp %.rc,$(SRCS)))))
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$(TARGET): $(OBJS)
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$(LD) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)
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.PHONY: clean
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clean:
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-del $(OBJS) $(TARGET)
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.PHONY: depends
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depends:
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-$(CXX) $(CXXFLAGS) $(CPPFLAGS) -MM $(filter %.c %.cpp,$(SRCS)) > Proj_Listing2_1.dep
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-include Proj_Listing2_1.dep
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270
reactos/apps/tests/patblt/patblt.cpp
Normal file
270
reactos/apps/tests/patblt/patblt.cpp
Normal file
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@ -0,0 +1,270 @@
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// ------------------------------------------------------------------
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// Windows 2000 Graphics API Black Book
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// Chapter 2 - Listing 2.1 (PatBlt Tracking Rect Demo)
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//
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// Created by Damon Chandler <dmc27@ee.cornell.edu>
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// Updates can be downloaded at: <www.coriolis.com>
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//
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// Please do not hesistate to e-mail me at dmc27@ee.cornell.edu
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// if you have any questions about this code.
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// ------------------------------------------------------------------
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//>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
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#include <windows.h>
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//<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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HINSTANCE HInst;
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const char* WndClassName = "GMainWnd";
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LRESULT CALLBACK MainWndProc(HWND HWnd, UINT Msg, WPARAM WParam,
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LPARAM LParam);
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int APIENTRY WinMain(HINSTANCE HInstance, HINSTANCE, LPTSTR,
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int nCmdShow)
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{
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HInst = HInstance;
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WNDCLASS wc;
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memset(&wc, 0, sizeof(WNDCLASS));
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wc.style = CS_VREDRAW | CS_HREDRAW;
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wc.lpszClassName = WndClassName;
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wc.lpfnWndProc = MainWndProc;
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wc.hInstance = HInstance;
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wc.hCursor = LoadCursor(NULL, IDC_ARROW);
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wc.hbrBackground = static_cast<HBRUSH>(
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GetStockObject(BLACK_BRUSH)
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);
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if (RegisterClass(&wc))
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{
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HWND HWnd =
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CreateWindow(WndClassName,
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TEXT("PatBlt Tracking Rect Demo"),
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WS_OVERLAPPEDWINDOW | WS_CAPTION |
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WS_VISIBLE | WS_CLIPCHILDREN,
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CW_USEDEFAULT, CW_USEDEFAULT, 640, 480,
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NULL, NULL, HInst, NULL);
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|
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if (HWnd)
|
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{
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ShowWindow(HWnd, nCmdShow);
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UpdateWindow(HWnd);
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|
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MSG msg;
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while (GetMessage(&msg, NULL, 0, 0))
|
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{
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TranslateMessage(&msg);
|
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DispatchMessage(&msg);
|
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}
|
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}
|
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}
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return 0;
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}
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//------------------------------------------------------------------
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// image related
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HDC HMemDC = NULL;
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HBITMAP HOldBmp = NULL;
|
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const char* filename = "PENGUIN.BMP";
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RECT RImage = {225, 110, 225, 110};
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|
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// tracking related
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bool is_tracking = false;
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HDC HScreenDC = NULL;
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POINT PMouse = {0, 0};
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RECT RTrack = {0, 0, 0, 0};
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const int line_width = 5;
|
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|
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|
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// utility function to map to/from window coordinates
|
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void MapRect(IN HWND HWndFrom, IN HWND HWndTo, IN OUT RECT& RMap)
|
||||
{
|
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MapWindowPoints(
|
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HWndFrom, HWndTo,
|
||||
reinterpret_cast<LPPOINT>(&RMap), 2
|
||||
);
|
||||
}
|
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//------------------------------------------------------------------
|
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|
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|
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// utility function that uses the PatBlt function to
|
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// render a tracking rectangle
|
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void RenderTrackingRect(IN HDC HDestDC, IN const RECT& RRender)
|
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{
|
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const int width = RRender.right - RRender.left;
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const int height = RRender.bottom - RRender.top;
|
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const DWORD dwROP3 = DSTINVERT; // experiment with others
|
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|
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// render top bar
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PatBlt(HDestDC,
|
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RRender.left, RRender.top,
|
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width, line_width,
|
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dwROP3);
|
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// render bottom bar
|
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PatBlt(HDestDC,
|
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RRender.left, RRender.bottom - line_width,
|
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width, line_width,
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dwROP3);
|
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// render left bar
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PatBlt(HDestDC,
|
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RRender.left, RRender.top + line_width,
|
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line_width, height - (2 * line_width),
|
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dwROP3);
|
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// render right bar
|
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PatBlt(HDestDC,
|
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RRender.right - line_width, RRender.top + line_width,
|
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line_width, height - (2 * line_width),
|
||||
dwROP3);
|
||||
|
||||
}
|
||||
//------------------------------------------------------------------
|
||||
|
||||
|
||||
LRESULT CALLBACK MainWndProc(HWND HWnd, UINT Msg, WPARAM WParam,
|
||||
LPARAM LParam)
|
||||
{
|
||||
switch (Msg)
|
||||
{
|
||||
case WM_CREATE:
|
||||
{
|
||||
// create a memory DC
|
||||
HMemDC = CreateCompatibleDC(NULL);
|
||||
if (HMemDC)
|
||||
{
|
||||
// load the penguin bitmap
|
||||
HBITMAP HBmp = static_cast<HBITMAP>(
|
||||
LoadImage(HInst, filename, IMAGE_BITMAP, 0, 0,
|
||||
LR_LOADFROMFILE | LR_DEFAULTSIZE)
|
||||
);
|
||||
if (HBmp)
|
||||
{
|
||||
// get the bitmap's dimensions
|
||||
BITMAP bmp;
|
||||
if (GetObject(HBmp, sizeof(BITMAP), &bmp))
|
||||
{
|
||||
RImage.right += bmp.bmWidth;
|
||||
RImage.bottom += bmp.bmHeight;
|
||||
|
||||
// realize the bitmap
|
||||
HOldBmp = static_cast<HBITMAP>(
|
||||
SelectObject(HMemDC, HBmp)
|
||||
);
|
||||
}
|
||||
else DeleteObject(HBmp);
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
case WM_LBUTTONDOWN:
|
||||
{
|
||||
PMouse.x = LOWORD(LParam);
|
||||
PMouse.y = HIWORD(LParam);
|
||||
|
||||
RECT RClient;
|
||||
if (PtInRect(&RImage, PMouse) &&
|
||||
GetClientRect(HWnd, &RClient))
|
||||
{
|
||||
MapRect(HWnd, HWND_DESKTOP, RClient);
|
||||
ClipCursor(&RClient);
|
||||
|
||||
// grab a handle to the screen DC and clip
|
||||
// all output to the client area of our window
|
||||
HScreenDC = GetDC(NULL);
|
||||
HRGN HClipRgn = CreateRectRgnIndirect(&RClient);
|
||||
SelectClipRgn(HScreenDC, HClipRgn);
|
||||
DeleteObject(HClipRgn);
|
||||
|
||||
CopyRect(&RTrack, &RImage);
|
||||
MapRect(HWnd, HWND_DESKTOP, RTrack);
|
||||
|
||||
// render the first tracking rect
|
||||
RenderTrackingRect(HScreenDC, RTrack);
|
||||
is_tracking = true;
|
||||
}
|
||||
break;
|
||||
}
|
||||
case WM_MOUSEMOVE:
|
||||
{
|
||||
if (HScreenDC && is_tracking)
|
||||
{
|
||||
POINT PCurrent = {LOWORD(LParam), HIWORD(LParam)};
|
||||
const int dX = PCurrent.x - PMouse.x;
|
||||
const int dY = PCurrent.y - PMouse.y;
|
||||
|
||||
// erase the previous rectangle
|
||||
RenderTrackingRect(HScreenDC, RTrack);
|
||||
// update the postion
|
||||
OffsetRect(&RTrack, dX, dY);
|
||||
// render the new tracking rectangle
|
||||
RenderTrackingRect(HScreenDC, RTrack);
|
||||
|
||||
// update the mouse position
|
||||
memcpy(&PMouse, &PCurrent, sizeof(POINT));
|
||||
}
|
||||
break;
|
||||
}
|
||||
case WM_LBUTTONUP:
|
||||
{
|
||||
// clean up
|
||||
if (is_tracking)
|
||||
{
|
||||
is_tracking = false;
|
||||
SelectClipRgn(HScreenDC, NULL);
|
||||
ReleaseDC(NULL, HScreenDC);
|
||||
|
||||
InvalidateRect(HWnd, &RImage, true);
|
||||
CopyRect(&RImage, &RTrack);
|
||||
MapRect(HWND_DESKTOP, HWnd, RImage);
|
||||
InvalidateRect(HWnd, &RImage, true);
|
||||
|
||||
ClipCursor(NULL);
|
||||
}
|
||||
break;
|
||||
}
|
||||
case WM_PAINT:
|
||||
{
|
||||
PAINTSTRUCT ps;
|
||||
HDC Hdc = BeginPaint(HWnd, &ps);
|
||||
try
|
||||
{
|
||||
//
|
||||
// TODO: Add palette support...
|
||||
//
|
||||
|
||||
// render the penguin
|
||||
BitBlt(Hdc, RImage.left, RImage.top,
|
||||
RImage.right - RImage.left,
|
||||
RImage.bottom - RImage.top,
|
||||
HMemDC, 0, 0,
|
||||
SRCCOPY);
|
||||
}
|
||||
catch (...)
|
||||
{
|
||||
EndPaint(HWnd, &ps);
|
||||
}
|
||||
EndPaint(HWnd, &ps);
|
||||
break;
|
||||
}
|
||||
case WM_DESTROY:
|
||||
{
|
||||
// clean up
|
||||
if (HOldBmp)
|
||||
{
|
||||
DeleteObject(SelectObject(HMemDC, HOldBmp));
|
||||
}
|
||||
if (HMemDC)
|
||||
{
|
||||
DeleteDC(HMemDC);
|
||||
}
|
||||
PostQuitMessage(0);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
return DefWindowProc(HWnd, Msg, WParam, LParam);
|
||||
}
|
||||
//------------------------------------------------------------------
|
||||
BIN
reactos/apps/tests/stretchblt/lena.bmp
Normal file
BIN
reactos/apps/tests/stretchblt/lena.bmp
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 87 KiB |
66
reactos/apps/tests/stretchblt/makefile
Normal file
66
reactos/apps/tests/stretchblt/makefile
Normal file
|
|
@ -0,0 +1,66 @@
|
|||
# Makefile - Proj_Listing1_5.dsp
|
||||
|
||||
ifndef CFG
|
||||
CFG=Proj_Listing1_5 - Win32 Debug
|
||||
endif
|
||||
CC=gcc
|
||||
CFLAGS=
|
||||
CXX=g++
|
||||
CXXFLAGS=$(CFLAGS)
|
||||
RC=windres -O COFF
|
||||
ifeq "$(CFG)" "Proj_Listing1_5 - Win32 Release"
|
||||
CFLAGS+=-fexceptions -O2 -DWIN32 -DNDEBUG -D_WINDOWS -D_MBCS -W
|
||||
LD=$(CXX) $(CXXFLAGS)
|
||||
LDFLAGS=
|
||||
LDFLAGS+=-Wl,--subsystem,windows
|
||||
LIBS+=-lkernel32 -luser32 -lgdi32
|
||||
else
|
||||
ifeq "$(CFG)" "Proj_Listing1_5 - Win32 Debug"
|
||||
CFLAGS+=-fexceptions -g -O0 -DWIN32 -D_DEBUG -D_WINDOWS -D_MBCS -W
|
||||
LD=$(CXX) $(CXXFLAGS)
|
||||
LDFLAGS=
|
||||
LDFLAGS+=-Wl,--subsystem,windows
|
||||
LIBS+=-lkernel32 -luser32 -lgdi32
|
||||
endif
|
||||
endif
|
||||
|
||||
ifndef TARGET
|
||||
TARGET=stretchblt.exe
|
||||
endif
|
||||
|
||||
.PHONY: all
|
||||
all: $(TARGET)
|
||||
|
||||
%.o: %.c
|
||||
$(CC) $(CFLAGS) $(CPPFLAGS) -o $@ -c $<
|
||||
|
||||
%.o: %.cpp
|
||||
$(CXX) $(CXXFLAGS) $(CPPFLAGS) -o $@ -c $<
|
||||
|
||||
%.res: %.rc
|
||||
$(RC) $(CPPFLAGS) -o $@ -i $<
|
||||
|
||||
SOURCE_FILES= \
|
||||
stretchblt.cpp
|
||||
|
||||
HEADER_FILES=
|
||||
|
||||
RESOURCE_FILES=
|
||||
|
||||
SRCS=$(SOURCE_FILES) $(HEADER_FILES) $(RESOURCE_FILES)
|
||||
|
||||
OBJS=$(patsubst %.rc,%.res,$(patsubst %.cpp,%.o,$(patsubst %.c,%.o,$(filter %.c %.cpp %.rc,$(SRCS)))))
|
||||
|
||||
$(TARGET): $(OBJS)
|
||||
$(LD) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)
|
||||
|
||||
.PHONY: clean
|
||||
clean:
|
||||
-del $(OBJS) $(TARGET)
|
||||
|
||||
.PHONY: depends
|
||||
depends:
|
||||
-$(CXX) $(CXXFLAGS) $(CPPFLAGS) -MM $(filter %.c %.cpp,$(SRCS)) > Proj_Listing1_5.dep
|
||||
|
||||
-include Proj_Listing1_5.dep
|
||||
|
||||
258
reactos/apps/tests/stretchblt/stretchblt.cpp
Normal file
258
reactos/apps/tests/stretchblt/stretchblt.cpp
Normal file
|
|
@ -0,0 +1,258 @@
|
|||
|
||||
// ------------------------------------------------------------------
|
||||
// Windows 2000 Graphics API Black Book
|
||||
// Chapter 1 - Listing 1.5 (StretchBlt Zooming Demo)
|
||||
//
|
||||
// Created by Damon Chandler <dmc27@ee.cornell.edu>
|
||||
// Updates can be downloaded at: <www.coriolis.com>
|
||||
//
|
||||
// Please do not hesistate to e-mail me at dmc27@ee.cornell.edu
|
||||
// if you have any questions about this code.
|
||||
// ------------------------------------------------------------------
|
||||
|
||||
|
||||
//>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
|
||||
#include <windows.h>
|
||||
//<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
|
||||
|
||||
|
||||
HWND HListBox = NULL;
|
||||
const int ID_LISTBOX = 101;
|
||||
|
||||
HINSTANCE HInst;
|
||||
const char* WndClassName = "GMainWnd";
|
||||
LRESULT CALLBACK MainWndProc(HWND HWnd, UINT Msg, WPARAM WParam,
|
||||
LPARAM LParam);
|
||||
|
||||
|
||||
int APIENTRY WinMain(HINSTANCE HInstance, HINSTANCE HPrevInstance,
|
||||
LPTSTR lpCmdLine, int nCmdShow)
|
||||
{
|
||||
HInst = HInstance;
|
||||
|
||||
WNDCLASS wc;
|
||||
memset(&wc, 0, sizeof(WNDCLASS));
|
||||
|
||||
wc.style = CS_VREDRAW | CS_HREDRAW | CS_DBLCLKS;
|
||||
wc.lpfnWndProc = MainWndProc;
|
||||
wc.hInstance = HInstance;
|
||||
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
|
||||
wc.hbrBackground = reinterpret_cast<HBRUSH>(COLOR_BTNFACE + 1);
|
||||
wc.lpszClassName = WndClassName;
|
||||
|
||||
if (RegisterClass(&wc))
|
||||
{
|
||||
HWND HWnd =
|
||||
CreateWindow(WndClassName, TEXT("StretchBlt Zooming Demo"),
|
||||
WS_OVERLAPPEDWINDOW | WS_CAPTION |
|
||||
WS_VISIBLE | WS_CLIPSIBLINGS,
|
||||
0, 0, 675, 560,
|
||||
NULL, NULL, HInst, NULL);
|
||||
|
||||
if (HWnd)
|
||||
{
|
||||
HListBox =
|
||||
CreateWindowEx(WS_EX_CLIENTEDGE, "LISTBOX", "",
|
||||
LBS_NOTIFY | WS_CHILD | WS_VISIBLE,
|
||||
530, 5, 130, 150, HWnd,
|
||||
reinterpret_cast<HMENU>(ID_LISTBOX),
|
||||
HInst, NULL);
|
||||
if (HListBox)
|
||||
{
|
||||
SNDMSG(HListBox, LB_ADDSTRING, 0,
|
||||
reinterpret_cast<LPARAM>("Zoom 25%"));
|
||||
SNDMSG(HListBox, LB_ADDSTRING, 0,
|
||||
reinterpret_cast<LPARAM>("Zoom 50%"));
|
||||
SNDMSG(HListBox, LB_ADDSTRING, 0,
|
||||
reinterpret_cast<LPARAM>("Zoom 75%"));
|
||||
SNDMSG(HListBox, LB_ADDSTRING, 0,
|
||||
reinterpret_cast<LPARAM>("Zoom 100%"));
|
||||
SNDMSG(HListBox, LB_ADDSTRING, 0,
|
||||
reinterpret_cast<LPARAM>("Zoom 125%"));
|
||||
SNDMSG(HListBox, LB_ADDSTRING, 0,
|
||||
reinterpret_cast<LPARAM>("Zoom 150%"));
|
||||
SNDMSG(HListBox, LB_ADDSTRING, 0,
|
||||
reinterpret_cast<LPARAM>("Zoom 200%"));
|
||||
SNDMSG(HListBox, LB_ADDSTRING, 0,
|
||||
reinterpret_cast<LPARAM>("Zoom 300%"));
|
||||
}
|
||||
|
||||
ShowWindow(HWnd, nCmdShow);
|
||||
UpdateWindow(HWnd);
|
||||
|
||||
MSG msg;
|
||||
while (GetMessage(&msg, NULL, 0, 0))
|
||||
{
|
||||
TranslateMessage(&msg);
|
||||
DispatchMessage(&msg);
|
||||
}
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
//------------------------------------------------------------------
|
||||
|
||||
|
||||
// image related
|
||||
BITMAP bmp;
|
||||
const char* filename = "LENA.BMP";
|
||||
HDC HMemDC = NULL;
|
||||
HBITMAP HOldBmp = NULL;
|
||||
|
||||
// zooming related
|
||||
float zoom_factor = 0.5;
|
||||
RECT RDest = {5, 5, 0, 0};
|
||||
enum {ID_ZOOM25, ID_ZOOM50, ID_ZOOM75, ID_ZOOM100,
|
||||
ID_ZOOM125, ID_ZOOM150, ID_ZOOM200, ID_ZOOM300};
|
||||
|
||||
LRESULT CALLBACK MainWndProc(HWND HWnd, UINT Msg, WPARAM WParam,
|
||||
LPARAM LParam)
|
||||
{
|
||||
switch (Msg)
|
||||
{
|
||||
case WM_CREATE:
|
||||
{
|
||||
// create a memory DC
|
||||
HMemDC = CreateCompatibleDC(NULL);
|
||||
if (HMemDC)
|
||||
{
|
||||
// load a bitmap from file
|
||||
HBITMAP HBmp =
|
||||
static_cast<HBITMAP>(
|
||||
LoadImage(HInst, filename, IMAGE_BITMAP,
|
||||
0, 0, LR_LOADFROMFILE)
|
||||
);
|
||||
if (HBmp)
|
||||
{
|
||||
// extract dimensions of the bitmap
|
||||
GetObject(HBmp, sizeof(BITMAP), &bmp);
|
||||
|
||||
// associate the bitmap with the memory DC
|
||||
HOldBmp = static_cast<HBITMAP>(
|
||||
SelectObject(HMemDC, HBmp)
|
||||
);
|
||||
}
|
||||
}
|
||||
}
|
||||
case WM_COMMAND:
|
||||
{
|
||||
if (WParam == MAKEWPARAM(ID_LISTBOX, LBN_SELCHANGE))
|
||||
{
|
||||
switch (SNDMSG(HListBox, LB_GETCURSEL, 0, 0))
|
||||
{
|
||||
case ID_ZOOM25: zoom_factor = 0.25; break;
|
||||
case ID_ZOOM50: zoom_factor = 0.50; break;
|
||||
case ID_ZOOM75: zoom_factor = 0.75; break;
|
||||
case ID_ZOOM100: zoom_factor = 1.00; break;
|
||||
case ID_ZOOM125: zoom_factor = 1.25; break;
|
||||
case ID_ZOOM150: zoom_factor = 1.50; break;
|
||||
case ID_ZOOM200: zoom_factor = 2.00; break;
|
||||
case ID_ZOOM300: zoom_factor = 3.00; break;
|
||||
}
|
||||
|
||||
// calculate the new width and height
|
||||
const int new_width =
|
||||
static_cast<int>(zoom_factor * bmp.bmWidth);
|
||||
const int new_height =
|
||||
static_cast<int>(zoom_factor * bmp.bmHeight);
|
||||
|
||||
// is zooming in?
|
||||
bool zoom_in = (new_width > RDest.right - RDest.left);
|
||||
|
||||
// caculate the area that needs to be updated
|
||||
RECT RUpdate = {
|
||||
RDest.left, RDest.top,
|
||||
RDest.left + max(new_width, RDest.right - RDest.left),
|
||||
RDest.top + max(new_height, RDest.bottom - RDest.top)
|
||||
};
|
||||
|
||||
// adjust the dimenstions of the
|
||||
// destination rectangle
|
||||
RDest.right = RDest.left + new_width;
|
||||
RDest.bottom = RDest.top + new_height;
|
||||
|
||||
// create an update region from the XOR combination
|
||||
// of the update and destination rectangles
|
||||
HRGN HUpdateRgn = CreateRectRgnIndirect(&RUpdate);
|
||||
HRGN HDestRgn = CreateRectRgnIndirect(&RDest);
|
||||
int result =
|
||||
CombineRgn(HUpdateRgn, HUpdateRgn, HDestRgn, RGN_XOR);
|
||||
|
||||
// incite a repaint
|
||||
if (result != NULLREGION && result != ERROR)
|
||||
{
|
||||
InvalidateRgn(HWnd, HUpdateRgn, true);
|
||||
RedrawWindow(HWnd, &RDest, NULL, RDW_NOERASE | RDW_INVALIDATE);
|
||||
}
|
||||
else if (result == NULLREGION)
|
||||
{
|
||||
InvalidateRect(HWnd, &RUpdate, zoom_in ? false : true);
|
||||
}
|
||||
|
||||
// clean up
|
||||
DeleteObject(HUpdateRgn);
|
||||
DeleteObject(HDestRgn);
|
||||
}
|
||||
break;
|
||||
}
|
||||
case WM_PAINT:
|
||||
{
|
||||
PAINTSTRUCT ps;
|
||||
const HDC Hdc = BeginPaint(HWnd, &ps);
|
||||
try
|
||||
{
|
||||
//
|
||||
// TODO: add palette support (see Chapter 9)...
|
||||
//
|
||||
|
||||
if (RDest.right - RDest.left > 0)
|
||||
{
|
||||
// use BitBlt when not zooming
|
||||
if (zoom_factor == 1.0)
|
||||
{
|
||||
BitBlt(Hdc, RDest.left, RDest.top,
|
||||
RDest.right - RDest.left,
|
||||
RDest.bottom - RDest.top,
|
||||
HMemDC, 0, 0,
|
||||
SRCCOPY);
|
||||
}
|
||||
else
|
||||
{
|
||||
if (zoom_factor < 1.0)
|
||||
{
|
||||
SetStretchBltMode(Hdc, COLORONCOLOR);
|
||||
}
|
||||
|
||||
// render the zoomed image
|
||||
StretchBlt(Hdc, RDest.left, RDest.top,
|
||||
RDest.right - RDest.left,
|
||||
RDest.bottom - RDest.top,
|
||||
HMemDC, 0, 0,
|
||||
bmp.bmWidth, bmp.bmHeight,
|
||||
SRCCOPY);
|
||||
}
|
||||
}
|
||||
}
|
||||
catch (...)
|
||||
{
|
||||
EndPaint(HWnd, &ps);
|
||||
}
|
||||
EndPaint(HWnd, &ps);
|
||||
break;
|
||||
}
|
||||
case WM_DESTROY:
|
||||
{
|
||||
// clean up
|
||||
DeleteObject(SelectObject(HMemDC, HOldBmp));
|
||||
DeleteDC(HMemDC);
|
||||
|
||||
PostQuitMessage(0);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
return DefWindowProc(HWnd, Msg, WParam, LParam);
|
||||
}
|
||||
//------------------------------------------------------------------
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in a new issue