// ----------------------------------------------------------------------------
void
text_buffer_delete( text_buffer_t * self )
{
vector_delete( self->lines );
font_manager_delete( self->manager );
vertex_buffer_delete( self->buffer );
glDeleteProgram( self->shader );
free( self );
}
FontRenderer::~FontRenderer()
{
if (m_pManager) {
font_manager_delete(m_pManager);
}
if (m_pTextBuffer) {
vertex_buffer_delete(m_pTextBuffer);
}
}
void CFont::Free()
{
if (nullptr != font_manager)
{
glDeleteTextures(1, &font_manager->atlas->id);
font_manager->atlas->id = 0;
font_manager_delete(font_manager);
font_manager = nullptr;
}
if (nullptr != buffer)
{
text_buffer_delete(buffer);
buffer = nullptr;
}
if (text_shader > 0)
{
glDeleteProgram(text_shader);
text_shader = 0;
}
}
// ------------------------------------------------------------------- main ---
int main( int argc, char **argv )
{
GLFWwindow* window;
char* screenshot_path = NULL;
if (argc > 1)
{
if (argc == 3 && 0 == strcmp( "--screenshot", argv[1] ))
screenshot_path = argv[2];
else
{
fprintf( stderr, "Unknown or incomplete parameters given\n" );
exit( EXIT_FAILURE );
}
}
glfwSetErrorCallback( error_callback );
if (!glfwInit( ))
{
exit( EXIT_FAILURE );
}
glfwWindowHint( GLFW_VISIBLE, GL_FALSE );
glfwWindowHint( GLFW_RESIZABLE, GL_FALSE );
window = glfwCreateWindow( 800, 600, argv[0], NULL, NULL );
if (!window)
{
glfwTerminate( );
exit( EXIT_FAILURE );
}
glfwMakeContextCurrent( window );
glfwSwapInterval( 1 );
TwInit( TW_OPENGL, NULL );
glfwSetFramebufferSizeCallback( window, reshape );
glfwSetWindowRefreshCallback( window, display );
glfwSetCursorPosCallback( window, cursor_pos );
glfwSetMouseButtonCallback( window, mouse_button );
glfwSetKeyCallback( window, keyboard );
#ifndef __APPLE__
GLenum err = glewInit();
if (GLEW_OK != err)
{
/* Problem: glewInit failed, something is seriously wrong. */
fprintf( stderr, "Error: %s\n", glewGetErrorString(err) );
exit( EXIT_FAILURE );
}
fprintf( stderr, "Using GLEW %s\n", glewGetString(GLEW_VERSION) );
#endif
init( window );
glfwShowWindow( window );
reshape( window, 800, 600 );
while(!glfwWindowShouldClose( window ))
{
display( window );
glfwPollEvents( );
if (screenshot_path)
{
screenshot( window, screenshot_path );
glfwSetWindowShouldClose( window, 1 );
}
}
TwTerminate();
glDeleteProgram( text_shader );
glDeleteTextures( 1, &font_manager_a->atlas->id );
glDeleteTextures( 1, &font_manager_rgb->atlas->id );
font_manager_a->atlas->id = 0;
font_manager_rgb->atlas->id = 0;
font_manager_delete( font_manager_rgb );
font_manager_delete( font_manager_a );
text_buffer_delete( text_buffer );
glfwDestroyWindow( window );
glfwTerminate( );
return EXIT_SUCCESS;
}
void CFont::TextAdd(float x, float y, float _size, float rectw, float recth, const char *text, const unsigned length)
{
bool hasSizeChange = abs(_size - normal.size) > 0.01f;
bool hasTextChange = (0 == lasttext.size() || 0 != strcmp(text, lasttext.c_str()));
if (hasSizeChange || hasTextChange || nullptr == font_manager)
{
// DONE: rebuild a font texture and atlas
if (nullptr != font_manager)
{
glDeleteTextures(1, &font_manager->atlas->id);
font_manager->atlas->id = 0;
font_manager_delete(font_manager);
font_manager = nullptr;
}
normal.size = _size;
font_manager = font_manager_new(ATLAS_SIZE, ATLAS_SIZE, LCD_FILTERING_ON);
normal.font = font_manager_get_from_markup(font_manager, &normal);
normal.font->kerning = 0;
text_buffer_clear(buffer);
vec2 pen = { { 0, 0 } };
text_buffer_add_text(buffer, &pen, &normal, text, length);
//text_buffer_align(buffer, &pen, ALIGN_CENTER);
glGenTextures(1, &font_manager->atlas->id);
glBindTexture(GL_TEXTURE_2D, font_manager->atlas->id);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, font_manager->atlas->width,
font_manager->atlas->height, 0, GL_RGB, GL_UNSIGNED_BYTE,
font_manager->atlas->data);
vec4 bounds = text_buffer_get_bounds(buffer, &pen);
mBounds[0] = bounds.x;
mBounds[1] = bounds.y;
mBounds[2] = bounds.z;
mBounds[3] = bounds.w;
lasttext = text;
}
//
//vec2 pen = { { x, y } };
//text_buffer_add_text(buffer, &pen, &normal, text, length);
mat4_set_identity(&model);
float stretch = 1.01f; // mBounds[2] / (0.8f * rectw);
float xoffset = 0.25f * mBounds[2] / length;
float yoffset = recth - 0.5f * (recth - mBounds[3]);
mat4_set_scaling(&model, stretch, 1.0f, 1.0f);
mat4_translate(&model, x + xoffset, y + yoffset, 0.0f);
}
// ------------------------------------------------------------------- main ---
int main( int argc, char **argv )
{
GLFWwindow* window;
char* screenshot_path = NULL;
if (argc > 1)
{
if (argc == 3 && 0 == strcmp( "--screenshot", argv[1] ))
screenshot_path = argv[2];
else
{
fprintf( stderr, "Unknown or incomplete parameters given\n" );
exit( EXIT_FAILURE );
}
}
glfwSetErrorCallback( error_callback );
if (!glfwInit( ))
{
exit( EXIT_FAILURE );
}
glfwWindowHint( GLFW_VISIBLE, GL_FALSE );
glfwWindowHint( GLFW_RESIZABLE, GL_FALSE );
window = glfwCreateWindow( 1000, 500, argv[0], NULL, NULL );
if (!window)
{
glfwTerminate( );
exit( EXIT_FAILURE );
}
glfwMakeContextCurrent( window );
glfwSwapInterval( 1 );
glfwSetFramebufferSizeCallback( window, reshape );
glfwSetWindowRefreshCallback( window, display );
glfwSetKeyCallback( window, keyboard );
#ifndef __APPLE__
GLenum err = glewInit();
if (GLEW_OK != err)
{
/* Problem: glewInit failed, something is seriously wrong. */
fprintf( stderr, "Error: %s\n", glewGetErrorString(err) );
exit( EXIT_FAILURE );
}
fprintf( stderr, "Using GLEW %s\n", glewGetString(GLEW_VERSION) );
#endif
float start=(float)(glfwGetTime()*1000.0f);
init();
////printf("init waste_time: %f\n", (float)(glfwGetTime()*1000.0f)-start);
glfwShowWindow( window );
reshape( window, 1000, 500 );
while(!glfwWindowShouldClose( window ))
{
start=(float)(glfwGetTime()*1000.0f);
display( window );
glfwPollEvents( );
///printf("waste_time: %f\n", (float)(glfwGetTime()*1000.0f)-start);
if (screenshot_path)
{
screenshot( window, (const char*)screenshot_path );
glfwSetWindowShouldClose( window, 1 );
}
}
glDeleteProgram( bounds_shader );
glDeleteProgram( text_shader );
glDeleteTextures( 1, &font_manager->atlas->id );
font_manager->atlas->id = 0;
text_buffer_delete( buffer );
font_manager_delete( font_manager );
glfwDestroyWindow( window );
glfwTerminate( );
return EXIT_SUCCESS;
}
