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#include "backend.h"
#include "core/exception.h"
extern struct android_app *g_App;
extern EGLDisplay g_EglDisplay;
extern EGLSurface g_EglSurface;
float funcDeviceScale()
{
JavaVM* java_vm = g_App->activity->vm;
JNIEnv* java_env = NULL;
jint jni_return = java_vm->GetEnv((void**)&java_env, JNI_VERSION_1_6);
if (jni_return == JNI_ERR)
throw satdump_exception("Could not get JNI environement");
jni_return = java_vm->AttachCurrentThread(&java_env, NULL);
if (jni_return != JNI_OK)
throw satdump_exception("Could not attach to thread");
jclass native_activity_clazz = java_env->GetObjectClass(g_App->activity->clazz);
if (native_activity_clazz == NULL)
throw satdump_exception("Could not get MainActivity class");
jmethodID method_id = java_env->GetMethodID(native_activity_clazz, "get_dpi", "()F");
if (method_id == NULL)
throw satdump_exception("Could not get methode ID");
jfloat jflt = java_env->CallFloatMethod(g_App->activity->clazz, method_id);
jni_return = java_vm->DetachCurrentThread();
if (jni_return != JNI_OK)
throw satdump_exception("Could not detach from thread");
return jflt;
}
void funcRebuildFonts()
{
ImGui_ImplOpenGL3_DestroyFontsTexture();
ImGui_ImplOpenGL3_CreateFontsTexture();
}
void funcSetMousePos(int, int)
{
// Not implemented on Android
}
std::pair<int, int> funcBeginFrame()
{
// Get display dimensions
EGLint width, height;
eglQuerySurface(g_EglDisplay, g_EglSurface, EGL_WIDTH, &width);
eglQuerySurface(g_EglDisplay, g_EglSurface, EGL_HEIGHT, &height);
// Start the Dear ImGui frame
ImGui_ImplOpenGL3_NewFrame();
ImGui_ImplAndroid_NewFrame();
ImGui::NewFrame();
return { (int)width, (int)height };
}
void funcEndFrame()
{
ImGui::Render();
ImGuiIO& io = ImGui::GetIO();
glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);
glClearColor(style::theme.frame_bg.Value.x, style::theme.frame_bg.Value.y, style::theme.frame_bg.Value.z, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
eglSwapBuffers(g_EglDisplay, g_EglSurface);
}
void funcSetIcon(uint8_t*, int, int)
{
// Not implemented on Android
}
void bindBackendFunctions()
{
backend::device_scale = funcDeviceScale();
backend::rebuildFonts = funcRebuildFonts;
backend::setMousePos = funcSetMousePos;
backend::beginFrame = funcBeginFrame;
backend::endFrame = funcEndFrame;
backend::setIcon = funcSetIcon;
}
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