void widget_list_onclick(widget *w)
{
if(!w)return;
float height = 0.0f;
sth_vmetrics(stash, w->fontface, w->fontsize, NULL,NULL,&height);
int2 click;
click.x = mouse_x - w->delta.x - w->pos.x;
click.y = mouse_y - w->delta.y - w->pos.y;
float fullheight = (float)w->count * height;
float totalheight = (fullheight - (float)w->size.y) / fullheight;
if(click.x < 0)return;
if(click.x > w->size.x)return;
if(click.y < 0)click.y = 0;
if(click.y > w->size.y)click.y = w->size.y;
if(click.x > (w->size.x - 20))
{
w->clicked = 2; // scrollbar!
}
else
{
w->clicked = 1; // selection
int i = (float)w->count * (w->percent * totalheight);
int offset = (float)click.y / height;
offset += i;
if(offset > w->count)return;
w->selected = offset;
}
}
void widget_list_click(widget *w)
{
if(!w)return;
float height = 0.0f;
sth_vmetrics(stash, w->fontface, w->fontsize, NULL,NULL,&height);
int2 click;
click.x = mouse_x - w->delta.x - w->pos.x;
click.y = mouse_y - w->delta.y - w->pos.y;
float fullheight = (float)w->count * height;
float totalheight = (fullheight - (float)w->size.y) / fullheight;
// if(click.x < 0)return;
// if(click.x > w->size.x)return;
// if(click.y < 0)click.y = 0;
// if(click.y > w->size.y)click.y = w->size.y;
if(2 == w->clicked) // scrollbar!
{
float scrollfactor = w->size.y / fullheight;
float barheight = scrollfactor * w->size.y;
float offset = w->percent;
offset -= (float)mickey_y / (float)(w->size.y-barheight);
if(offset < 0.0) offset = 0.0;
if(offset > 1.0) offset = 1.0;
w->percent = offset;
}
else
{
int i = (float)w->count * (w->percent * totalheight);
int offset = (float)click.y / height;
offset += i;
if(offset > w->count)return;
w->selected = offset;
// char **file = w->data;
// printf("this one %s\n", file[offset]);
}
}
int main(int argc, char *argv[]) {
int done;
SDL_Event event;
int width, height;
struct sth_stash* stash = 0;
FILE* fp = 0;
int datasize;
unsigned char* data;
float sx,sy,dx,dy,lh;
int droidRegular, droidItalic, droidBold, droidJapanese, dejavu;
SDL_Surface* surface;
GLuint texture;
if (SDL_Init(SDL_INIT_EVERYTHING) < 0)
{
fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
return -1;
}
// Init OpenGL
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
#ifdef STH_OPENGL3
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
#endif
width = 800;
height = 600;
SDL_Window* window = SDL_CreateWindow("FontStash Demo", 100, 100, width, height, SDL_WINDOW_OPENGL);
if (!window)
{
fprintf(stderr, "Could not initialise SDL opengl\n");
return -1;
}
SDL_GLContext context = SDL_GL_CreateContext(window);
stash = sth_create(512,512);
if (!stash)
{
fprintf(stderr, "Could not create stash.\n");
return -1;
}
// Load the first truetype font from memory (just because we can).
fp = fopen("DroidSerif-Regular.ttf", "rb");
if (!fp) goto error_add_font;
fseek(fp, 0, SEEK_END);
datasize = (int)ftell(fp);
fseek(fp, 0, SEEK_SET);
data = (unsigned char*)malloc(datasize);
if (data == NULL) goto error_add_font;
fread(data, 1, datasize, fp);
fclose(fp);
fp = 0;
if (!(droidRegular = sth_add_font_from_memory(stash, data)))
goto error_add_font;
// Load the remaining truetype fonts directly.
if (!(droidItalic = sth_add_font(stash,"DroidSerif-Italic.ttf")))
goto error_add_font;
if (!(droidBold = sth_add_font(stash,"DroidSerif-Bold.ttf")))
goto error_add_font;
if (!(droidJapanese = sth_add_font(stash,"DroidSansJapanese.ttf")))
goto error_add_font;
// Load a bitmap font
surface = IMG_Load("dejavu-sans_0.png");
if (surface == NULL)
{
fprintf(stderr, "%s.\n", IMG_GetError());
return -1;
}
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
if (SDL_MUSTLOCK(surface)) SDL_LockSurface(surface);
glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA8, surface->w, surface->h, 0, GL_ALPHA, GL_UNSIGNED_BYTE, surface->pixels);
if (SDL_MUSTLOCK(surface)) SDL_UnlockSurface(surface);
SDL_FreeSurface(surface);
dejavu = sth_add_bitmap_font(stash, 17, -4, 2);
sth_add_glyph_for_char(stash, dejavu, texture, "T", 18, 14, 363, 331, 10, 11, 0, 3, 10);
sth_add_glyph_for_char(stash, dejavu, texture, "h", 18, 14, 225, 382, 8, 11, 1, 3, 10);
sth_add_glyph_for_char(stash, dejavu, texture, "i", 18, 14, 478, 377, 2, 11, 1, 3, 4);
sth_add_glyph_for_char(stash, dejavu, texture, "s", 18, 14, 199, 455, 7, 8, 1, 6, 9);
sth_add_glyph_for_char(stash, dejavu, texture, " ", 18, 14, 66, 185, 1, 1, 0, 14, 5);
sth_add_glyph_for_char(stash, dejavu, texture, "a", 18, 14, 18, 459, 8, 8, 1, 6, 10);
sth_add_glyph_for_char(stash, dejavu, texture, "b", 18, 14, 198, 383, 8, 11, 1, 3, 10);
sth_add_glyph_for_char(stash, dejavu, texture, "t", 18, 14, 436, 377, 5, 11, 1, 3, 6);
sth_add_glyph_for_char(stash, dejavu, texture, "m", 18, 14, 494, 429, 12, 8, 2, 6, 16);
sth_add_glyph_for_char(stash, dejavu, texture, "p", 18, 14, 436, 353, 8, 11, 1, 6, 10);
sth_add_glyph_for_char(stash, dejavu, texture, "f", 18, 14, 442, 377, 5, 11, 1, 3, 7);
sth_add_glyph_for_char(stash, dejavu, texture, "o", 18, 14, 483, 438, 8, 8, 1, 6, 10);
sth_add_glyph_for_char(stash, dejavu, texture, "n", 18, 14, 0, 459, 8, 8, 1, 6, 10);
sth_add_glyph_for_char(stash, dejavu, texture, ".", 18, 14, 285, 476, 2, 3, 1, 11, 6);
done = 0;
while (!done)
{
while (SDL_PollEvent(&event))
{
switch (event.type)
{
case SDL_MOUSEMOTION:
break;
case SDL_MOUSEBUTTONDOWN:
break;
case SDL_KEYDOWN:
if (event.key.keysym.sym == SDLK_ESCAPE)
done = 1;
break;
case SDL_QUIT:
done = 1;
break;
default:
break;
}
}
// Update and render
glViewport(0, 0, width, height);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glClearColor(0.3f, 0.3f, 0.32f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
#ifdef STH_OPENGL3
std::cout << "OpenGL3" << std::endl;
glm::mat4 proj = glm::ortho(0.0f, (GLfloat) width, 0.0f, (GLfloat) height, -1.0f, 1.0f);
sth_projection_matrix(stash, glm::value_ptr(proj));
sth_color(stash, 1.0f, 0.0f, 0.0f, 1.0f);
#else
std::cout << "Immediate OpenGL" << std::endl;
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0,width,0,height,-1,1);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glColor4ub(255,255,255,255);
#endif
sx = 100; sy = 250;
sth_begin_draw(stash);
dx = sx; dy = sy;
sth_draw_text(stash, droidRegular, 24.0f, dx, dy, "The quick ", &dx);
sth_draw_text(stash, droidItalic, 48.0f, dx, dy, "brown ", &dx);
sth_draw_text(stash, droidRegular, 24.0f, dx, dy, "fox ", &dx);
sth_vmetrics(stash, droidItalic, 24, NULL, NULL, &lh);
dx = sx;
dy -= lh*1.2f;
sth_draw_text(stash, droidItalic, 24.0f, dx, dy, "jumps over ", &dx);
sth_draw_text(stash, droidBold, 24.0f, dx, dy, "the lazy ", &dx);
sth_draw_text(stash, droidRegular, 24.0f, dx, dy, "dog.", &dx);
dx = sx;
dy -= lh*1.2f;
sth_draw_text(stash, droidRegular, 12.0f, dx, dy, "Now is the time for all good men to come to the aid of the party.", &dx);
sth_vmetrics(stash, droidItalic, 12, NULL, NULL, &lh);
dx = sx;
dy -= lh*1.2f*2;
sth_draw_text(stash, droidItalic, 18.0f, dx, dy, "Ég get etið gler án þess að meiða mig.", &dx);
sth_vmetrics(stash, droidItalic, 18, NULL, NULL, &lh);
dx = sx;
dy -= lh*1.2f;
sth_draw_text(stash, droidJapanese, 18.0f, dx, dy, "私はガラスを食べられます。それは私を傷つけません。", &dx);
dx = sx;
dy -= lh*1.2f*2;
sth_draw_text(stash, dejavu, 18.0f, dx, dy, "This is a bitmap font.", &dx);
sth_end_draw(stash);
SDL_GL_SwapWindow(window);
}
sth_delete(stash);
free(data);
SDL_GL_DeleteContext(context);
SDL_Quit();
return 0;
error_add_font:
fprintf(stderr, "Could not add font.\n");
return -1;
}
void widget_list_draw(widget *w)
{
if(!w)return;
float height = 0.0f;
float fascend=0, fdescend=0;
sth_vmetrics(stash, w->fontface, w->fontsize, &fascend, &fdescend, &height);
float hoff = -fascend;
float fullheight = (float)w->count * height;
float totalheight = (fullheight - (float)w->size.y) / fullheight;
int y = 0;
char **names = (char**)w->data;
widget_rect_draw(w);
glEnable(GL_SCISSOR_TEST);
glScissor(w->drawpos.x, vid_height - w->drawpos.y - w->size.y, w->size.x, w->size.y);
glColor4f(1,1,1,1);
sth_begin_draw(stash);
if( fullheight < w->size.y )
{ // scrollbar not needed
for(int i=0; i<w->count; i++)
{
if(i == w->selected)
{
glTranslatef(0, y, 0);
glColor4f(1,1,1,0.2);
draw_rect(w->size.x, height);
glTranslatef(0, -y, 0);
}
glColor4f(1,1,1,1);
sth_draw_text(stash, w->fontface, w->fontsize, 10, y+hoff, names[i], 0);
y -= height;
}
sth_end_draw(stash);
}
else
{
float smooth = (float)w->count * (w->percent * totalheight);
double mtmp = 0;
int ysmooth = modf(smooth, &mtmp) * height;
int i = smooth;
for(; i<w->count; i++)
{
if(i == w->selected)
{
glTranslatef(0, y+ysmooth, 0);
glColor4f(1,1,1,0.2);
draw_rect(w->size.x-20, height);
glTranslatef(0, -(y+ysmooth), 0);
}
glColor4f(1,1,1,1);
sth_draw_text(stash, w->fontface, w->fontsize, 10, y+hoff+ysmooth, names[i], 0);
y -= height;
if( -y > w->size.y)
break;
}
sth_end_draw(stash);
glColor4f(0,0,0,0.5);
glTranslatef(w->size.x - 20, 0, 0);
draw_rect(20, w->size.y);
glColor4f(1,1,1,0.9);
float scrollfactor = w->size.y / fullheight;
float barheight = scrollfactor * w->size.y;
glTranslatef(0, -w->percent*(float)(w->size.y-barheight), 0);
draw_rect(20, barheight);
glTranslatef(0, w->percent*(float)(w->size.y-barheight), 0);
glTranslatef(-w->size.x + 20, 0, 0);
}
glDisable(GL_SCISSOR_TEST);
}
