implement ColorFilter in GskCanvas

This is needed to make icons follow night mode setting
This commit is contained in:
Julian Winkler
2024-03-24 21:12:13 +01:00
parent ad266c7821
commit 8eb0c0a3c1
5 changed files with 34 additions and 6 deletions

View File

@@ -6,11 +6,25 @@
#include "../generated_headers/android_graphics_GskCanvas.h"
JNIEXPORT void JNICALL Java_android_graphics_GskCanvas_native_1drawBitmap(JNIEnv *env, jclass this_class, jlong snapshot_ptr, jlong pixbuf_ptr, jint x, jint y, jint width, jint height)
JNIEXPORT void JNICALL Java_android_graphics_GskCanvas_native_1drawBitmap(JNIEnv *env, jclass this_class, jlong snapshot_ptr, jlong pixbuf_ptr, jint x, jint y, jint width, jint height, jint color)
{
GdkSnapshot *snapshot = (GdkSnapshot *)_PTR(snapshot_ptr);
GdkPixbuf *pixbuf = (GdkPixbuf *)_PTR(pixbuf_ptr);
GdkTexture *texture = gdk_texture_new_for_pixbuf(pixbuf);
if (color) { // use only alpha from pixbuf, color is fixed
graphene_matrix_t color_matrix;
graphene_vec4_t color_offset;
graphene_matrix_init_from_float(&color_matrix, (float[]){
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 1,
});
graphene_vec4_init(&color_offset, ((color >> 16) & 0xFF) / 255.f, ((color >> 8) & 0xFF) / 255.f, ((color >> 0) & 0xFF) / 255.f, 0);
gtk_snapshot_push_color_matrix(snapshot, &color_matrix, &color_offset);
}
gtk_snapshot_append_texture(snapshot, texture, &GRAPHENE_RECT_INIT(x, y, width, height));
if (color)
gtk_snapshot_pop(snapshot);
g_object_unref(texture);
}