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api-impl: implement Canvas text drawing as used by Gravity Defied

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implements android.graphics.Typeface (always uses default
typeface for now), one version of Canvas.drawText, one version
of Paint.measureText, and Paint.ascend
This commit is contained in:
Mis012
2023-09-12 19:30:20 +02:00
parent f25e9b021f
commit 24353378be
10 changed files with 198 additions and 21 deletions
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15
src/api-impl-jni/android_graphics_Canvas.c
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@@ -4,7 +4,10 @@
#include "util.h"
#include "../sk_area/include/c/sk_canvas.h"
#include "../sk_area/include/c/sk_font.h"
#include "../sk_area/include/c/sk_image.h"
#include "../sk_area/include/c/sk_typeface.h"
#include "generated_headers/android_graphics_Canvas.h"
JNIEXPORT void JNICALL Java_android_graphics_Canvas_native_1save(JNIEnv *env, jclass this, jlong skia_canvas, jlong widget)
@@ -51,6 +54,18 @@ JNIEXPORT void JNICALL Java_android_graphics_Canvas_native_1drawRect(JNIEnv *env
sk_canvas_draw_rect(canvas, &(sk_rect_t){left, top, right, bottom}, paint);
}
JNIEXPORT void JNICALL Java_android_graphics_Canvas_native_1drawText(JNIEnv *env, jclass this, jlong skia_canvas, jobject _text, jint start, jint end, jfloat x, jfloat y, jlong skia_font, jlong skia_paint)
{
sk_canvas_t *canvas = (sk_canvas_t *)_PTR(skia_canvas);
sk_paint_t *paint = (sk_paint_t *)_PTR(skia_paint);
sk_font_t *font = _PTR(skia_font);
const char *text = _CSTRING(_text);
/* TODO: handle start/end (here or in java) */
sk_canvas_draw_simple_text(canvas, text + start, end - start, UTF8_SK_TEXT_ENCODING, x, y, font, paint);
}
JNIEXPORT void JNICALL Java_android_graphics_Canvas_native_1rotate(JNIEnv *env, jclass this, jlong skia_canvas, jlong widget, jfloat angle)
{
sk_canvas_t *canvas = (sk_canvas_t *)_PTR(skia_canvas);