154 lines
5.4 KiB
C++
Executable File
154 lines
5.4 KiB
C++
Executable File
/*
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* Copyright (c) 2002 Light Weight Java Game Library Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of 'Light Weight Java Game Library' nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* $Id$
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*
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* win32 mouse handling.
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*
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* @author elias_naur <elias_naur@users.sourceforge.net>
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* @version $Revision$
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*/
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#include <windows.h>
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#include "org_lwjgl_input_Cursor.h"
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#include "Window.h"
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#include "common_tools.h"
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/*
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* Class: org_lwjgl_input_Cursor
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* Method: nCreateCursor
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* Signature: (IIIIIIIII)I
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*/
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JNIEXPORT jlong JNICALL Java_org_lwjgl_input_Cursor_nCreateCursor
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(JNIEnv *env, jclass clazz, jint width, jint height, jint x_hotspot, jint y_hotspot, jint num_images, jobject image_buffer, jint images_offset)
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{
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int *pixels = (int *)env->GetDirectBufferAddress(image_buffer) + images_offset;
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BITMAPINFO bitmapInfo;
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char *ptrCursorImage;
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HBITMAP colorDIB;
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HBITMAP colorBitmap;
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int x, y;
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memset(&bitmapInfo, 0, sizeof(BITMAPINFO));
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bitmapInfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
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bitmapInfo.bmiHeader.biWidth = width;
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bitmapInfo.bmiHeader.biHeight = -height;
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bitmapInfo.bmiHeader.biPlanes = 1;
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bitmapInfo.bmiHeader.biBitCount = 24;
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bitmapInfo.bmiHeader.biCompression = BI_RGB;
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colorDIB = CreateDIBSection(hdc, (BITMAPINFO*)&(bitmapInfo),
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DIB_RGB_COLORS,
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(void**)&(ptrCursorImage),
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NULL, 0);
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int *srcPtr = pixels;
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char *dstPtr = ptrCursorImage;
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if (!dstPtr) {
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throwException(env, "Could not allocate DIB section.");
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return 0;
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}
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for (y = 0; y < height; y++ ) {
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for (x = 0; x < width; x++ ) {
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dstPtr[2] = (*srcPtr >> 0x10) & 0xFF;
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dstPtr[1] = (*srcPtr >> 0x08) & 0xFF;
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dstPtr[0] = *srcPtr & 0xFF;
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srcPtr++;
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dstPtr += 3;
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}
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}
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colorBitmap = CreateDIBitmap(hdc,
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(BITMAPINFOHEADER*)&bitmapInfo.bmiHeader,
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CBM_INIT,
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(void *)ptrCursorImage,
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(BITMAPINFO*)&bitmapInfo,
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DIB_RGB_COLORS);
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DeleteObject(colorDIB);
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// Convert alpha map to pixel packed mask
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int bitWidth = width >> 3;
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int scanlinePad = bitWidth & (sizeof(WORD) - 1);
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int imageSize = (bitWidth + scanlinePad)*height; // Size in bits
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unsigned char *maskPixels = new unsigned char[imageSize];
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memset(maskPixels, 0, imageSize);
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int pixelCount = 0;
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int maskCount = 0;
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for (y = 0; y < height; y++)
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for (x = 0; x < bitWidth; x++) {
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unsigned char col0 = (pixels[pixelCount++] & 0x01000000) >> 17;
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unsigned char col1 = (pixels[pixelCount++] & 0x01000000) >> 18;
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unsigned char col2 = (pixels[pixelCount++] & 0x01000000) >> 19;
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unsigned char col3 = (pixels[pixelCount++] & 0x01000000) >> 20;
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unsigned char col4 = (pixels[pixelCount++] & 0x01000000) >> 21;
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unsigned char col5 = (pixels[pixelCount++] & 0x01000000) >> 22;
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unsigned char col6 = (pixels[pixelCount++] & 0x01000000) >> 23;
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unsigned char col7 = (pixels[pixelCount++] & 0x01000000) >> 24;
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unsigned char mask = col0 | col1 | col2 | col3 | col4 | col5 | col6 | col7;
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maskPixels[maskCount++] = ~mask; // 1 is tranparant, 0 opaque
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}
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HBITMAP cursorMask = CreateBitmap(width, height, 1, 1, maskPixels);
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HCURSOR cursor = NULL;
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ICONINFO iconInfo;
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memset(&iconInfo, 0, sizeof(ICONINFO));
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iconInfo.hbmMask = cursorMask;
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iconInfo.hbmColor = colorBitmap;
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iconInfo.fIcon = FALSE;
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iconInfo.xHotspot = x_hotspot;
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iconInfo.yHotspot = y_hotspot;
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cursor = CreateIconIndirect(&iconInfo);
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DeleteObject(colorBitmap);
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DeleteObject(cursorMask);
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delete[] maskPixels;
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return (jint)cursor;
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}
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/*
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* Class: org_lwjgl_input_Cursor
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* Method: nDestroyCursor
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* Signature: (I)V
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*/
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JNIEXPORT void JNICALL Java_org_lwjgl_input_Cursor_nDestroyCursor
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(JNIEnv *env, jclass clazz, jlong cursor_handle)
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{
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HCURSOR cursor = (HCURSOR)cursor_handle;
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DestroyCursor(cursor);
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}
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