static void display(void) {
switch(number) {
case 0: wire_text(); break;
case 1: bitmap_text(GLT_HELVETICA); break;
case 2: bitmap_text(GLT_TIMES); break;
case 3: bitmap_text(GLT_COURIER); break;
case 4: bitmap_text(GLT_FIXED); break;
case 5: texture_text(); break;
}
SDL_GL_SwapBuffers();
}
int ExampleText::start(const std::vector<CL_String> &args)
{
// Create a console window for text-output if not available
CL_ConsoleWindow console("Console");
quit = false;
// Set a videomode
CL_DisplayWindowDescription desc;
desc.set_allow_resize(false);
desc.set_title("ClanLib CL_SpanLayout Example");
desc.set_size(CL_Size(800, 600), true);
CL_DisplayWindow window(desc);
// Connect the Window close event
CL_Slot slot_quit = window.sig_window_close().connect(this, &ExampleText::on_window_close);
// Connect a keyboard handler to on_key_up()
CL_Slot slot_keyboard_up = window.get_ic().get_keyboard().sig_key_up().connect(this, &ExampleText::on_keyboard_up);
CL_GraphicContext gc = window.get_gc();
CL_TextureGroup texture_group(gc, CL_Size(512, 512));
CL_FontDescription font_desc;
font_desc.set_typeface_name("Tahoma");
font_desc.set_anti_alias(true);
font_desc.set_height(32);
CL_Font_System font_normal(gc, font_desc);
font_desc.set_weight(800);
font_desc.set_height(40);
CL_Font_System font_bold(gc, font_desc);
// Share the font texture
font_normal.set_texture_group(texture_group);
font_bold.set_texture_group(texture_group);
CL_Texture texture_text(gc, text_window_size, text_window_size);
texture_text.set_wrap_mode(cl_wrap_repeat, cl_wrap_repeat, cl_wrap_repeat);
texture_text.set_min_filter(cl_filter_linear);
texture_text.set_mag_filter(cl_filter_linear);
// Create the framebuffer, and attach the texture text into its color buffer
CL_FrameBuffer fb_text;
fb_text = CL_FrameBuffer(gc);
fb_text.attach_color_buffer(0, texture_text);
float angle = 0.0f;
std::vector<CL_SpanLayout> layout;
// Count number of lines
int num_lines = 0;
for (const char **text_ptr = TextToShow; *text_ptr; text_ptr++)
{
num_lines++;
}
// Extend layout vector
layout.resize(num_lines);
int ypos = 60;
for (int line_count=0; line_count < num_lines; line_count++, ypos += 8)
{
layout[line_count] = CL_SpanLayout();
layout[line_count].set_position(CL_Point(20, ypos));
layout[line_count].set_align(cl_justify);
const char *text_ptr = TextToShow[line_count];
if (text_ptr[0] == '-')
{
layout[line_count].add_text(text_ptr, font_normal, CL_Colorf::red);
}
else if (strstr(text_ptr, "Clan"))
{
layout[line_count].add_text(text_ptr, font_bold, CL_Colorf::yellow);
}
else
{
layout[line_count].add_text(text_ptr, font_normal, CL_Colorf::yellow);
}
layout[line_count].layout(gc, texture_text.get_width() - 60);
ypos += layout[line_count].get_size().height;
}
// Run until someone presses escape
while (!quit)
{
int start_time = CL_System::get_time();
gc.set_map_mode(CL_MapMode(cl_map_2d_upper_left));
// Draw a nice blue gradient in the background
CL_Draw::gradient_fill(gc, window.get_viewport(), CL_Gradient(CL_Colorf::lightblue, CL_Colorf::lightblue, CL_Colorf::darkblue, CL_Colorf::darkblue));
// Draw the text into the frame buffer
update_text(gc, fb_text, font_normal, layout);
angle += 0.5f;
if (angle >= 360.0f)
angle -= 360.0f;
// Draw the text
draw_text(gc, texture_text, CL_Angle(angle, cl_degrees));
last_fps = 1000.0f / (CL_System::get_time()-start_time);
// Flip the display, showing on the screen what we have drawn
window.flip(1);
// This call updates input and performs other "housekeeping" call this each frame
CL_KeepAlive::process();
}
return 0;
}
