45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
#include "org_lwjgl_input_Cursor.h"
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#include "extxcursor.h"
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#include "Window.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: (IIIIIII)I
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*/
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JNIEXPORT jint 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, jint image_addresses, jint delay_addresses)
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{
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XcursorPixel *pixels = (XcursorPixel *)image_addresses;
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int *delays = (int *)delay_addresses;
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int stride = width*height;
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XcursorImages *cursor_images = XcursorImagesCreate(num_images);
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if (cursor_images == NULL)
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throwException(env, "Could not allocate cursor.");
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cursor_images->nimage = num_images;
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for (int i = 0; i < num_images; i++) {
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XcursorImage *cursor_image = XcursorImageCreate(width, height);
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cursor_image->xhot = x_hotspot;
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cursor_image->yhot = y_hotspot;
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cursor_image->pixels = &(pixels[stride*i]);
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if (num_images > 1)
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cursor_image->delay = delays[i];
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cursor_images->images[i] = cursor_image;
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}
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Cursor cursor = XcursorImagesLoadCursor(getCurrentDisplay(), cursor_images);
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XcursorImagesDestroy(cursor_images);
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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, jint cursor_handle)
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{
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Cursor cursor = (Cursor)cursor_handle;
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XFreeCursor(getCurrentDisplay(), cursor);
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}
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