text_buffer *text_buffer_alloc(UINT32 bytes, UINT32 lines)
{
text_buffer *text;
/* allocate memory for the text buffer object */
text = global_alloc_nothrow(text_buffer);
if (!text)
return nullptr;
/* allocate memory for the buffer itself */
text->buffer = global_alloc_array_nothrow(char, bytes);
if (!text->buffer)
{
global_free(text);
return nullptr;
}
/* allocate memory for the lines array */
text->lineoffs = global_alloc_array_nothrow(INT32, lines);
if (!text->lineoffs)
{
global_free_array(text->buffer);
global_free(text);
return nullptr;
}
/* initialize the buffer description */
text->bufsize = bytes;
text->linesize = lines;
text_buffer_clear(text);
return text;
}
text_buffer *text_buffer_alloc(UINT32 bytes, UINT32 lines)
{
text_buffer *text;
/* allocate memory for the text buffer object */
text = (text_buffer *)malloc(sizeof(*text));
if (!text)
return NULL;
/* allocate memory for the buffer itself */
text->buffer = (char *)malloc(bytes);
if (!text->buffer)
{
free(text);
return NULL;
}
/* allocate memory for the lines array */
text->lineoffs = (INT32 *)malloc(lines * sizeof(text->lineoffs[0]));
if (!text->lineoffs)
{
free(text->buffer);
free(text);
return NULL;
}
/* initialize the buffer description */
text->bufsize = bytes;
text->linesize = lines;
text_buffer_clear(text);
return text;
}
/* ----------------------------------------------------------------- print - */
void TextRender::print(const std::wstring &_text,
const float &_x,
const float &_y)
{
m_mutex.lock();
m_pen = { { _x, _y } };
m_markup.font = font_manager_get_from_markup(m_text_buffer->manager, &m_markup);
text_buffer_clear(m_text_buffer);
text_buffer_add_text(m_text_buffer, &m_pen, &m_markup, const_cast<wchar_t*>(_text.c_str()), _text.size());
m_mutex.unlock();
}
// ----------------------------------------------------------- build_buffer ---
void
build_buffer( void )
{
vec2 pen;
texture_font_t *font;
vec4 black = {{0.0, 0.0, 0.0, 1.0}};
vec4 white = {{1.0, 1.0, 1.0, 1.0}};
vec4 none = {{1.0, 1.0, 1.0, 0.0}};
vec4 color = white;
if( p_invert )
{
color = black;
}
markup_t markup = {
.family = "Source Sans Pro",
.size = 10.0,
.bold = 0,
.italic = 0,
.spacing = p_interval,
.gamma = p_gamma,
.foreground_color = color,
.background_color = none,
.underline = 0,
.underline_color = color,
.overline = 0,
.overline_color = color,
.strikethrough = 0,
.strikethrough_color = color,
.font = 0,
};
text_buffer_clear( text_buffer );
texture_atlas_t * atlas = font_manager->atlas;
texture_atlas_clear( atlas );
if( p_family == VERA)
{
font = texture_font_new_from_file( atlas, p_size, "fonts/Vera.ttf" );
}
else if( p_family == VERA_MONO)
{
font = texture_font_new_from_file( atlas, p_size, "fonts/VeraMono.ttf" );
}
else if( p_family == LUCKIEST_GUY)
{
font = texture_font_new_from_file( atlas, p_size, "fonts/LuckiestGuy.ttf" );
}
else if( p_family == SOURCE_SANS )
{
font = texture_font_new_from_file( atlas, p_size, "fonts/SourceSansPro-Regular.ttf" );
}
else if( p_family == SOURCE_CODE )
{
font = texture_font_new_from_file( atlas, p_size, "fonts/SourceCodePro-Regular.ttf" );
}
else if( p_family == OLD_STANDARD )
{
font = texture_font_new_from_file( atlas, p_size, "fonts/OldStandard-Regular.ttf" );
}
else if( p_family == LOBSTER )
{
font = texture_font_new_from_file( atlas, p_size, "fonts/Lobster-Regular.ttf" );
}
else
{
fprintf( stderr, "Error : Unknown family type\n" );
return;
}
if (!font)
return;
markup.font = font;
font->hinting = p_hinting;
font->kerning = p_kerning;
font->filtering = 1;
float norm = 1.0/(p_primary + 2*p_secondary + 2*p_tertiary);
font->lcd_weights[0] = (unsigned char)(p_tertiary*norm*255);
font->lcd_weights[1] = (unsigned char)(p_secondary*norm*255);
font->lcd_weights[2] = (unsigned char)(p_primary*norm*255);
font->lcd_weights[3] = (unsigned char)(p_secondary*norm*255);
font->lcd_weights[4] = (unsigned char)(p_tertiary*norm*255);
pen.x = 10;
pen.y = 600 - font->height - 10;
text_buffer_printf( text_buffer, &pen, &markup, text, NULL );
// Post-processing for width and orientation
vertex_buffer_t * vbuffer = text_buffer->buffer;
size_t i;
for( i=0; i < vector_size( vbuffer->items ); ++i )
{
ivec4 *item = (ivec4 *) vector_get( vbuffer->items, i);
glyph_vertex_t * v0 = /* x0,y0 */
(glyph_vertex_t *) vector_get( vbuffer->vertices, item->vstart+0 );
//glyph_vertex_t * v1 = /* x0,y1 */
// (glyph_vertex_t *) vector_get( vbuffer->vertices, item->vstart+1 );
glyph_vertex_t * v2 = /* x1,y1 */
(glyph_vertex_t *) vector_get( vbuffer->vertices, item->vstart+2 );
glyph_vertex_t * v3 = /* x1,y0 */
(glyph_vertex_t *) vector_get( vbuffer->vertices, item->vstart+3 );
float x0 = v0->x, y0 = v0->y;
float x1 = v2->x, y1 = v2->y;
v2->x = v3->x = x0 + (x1-x0)*p_width;
float dy = fabs(y1-y0);
float dx = tan(p_faux_italic/180.0 * M_PI) * dy;
v0->x += dx;
v0->shift = fmod(v0->shift + dx-(int)(dx),1.0);
v3->x += dx;
v3->shift = fmod(v3->shift + dx-(int)(dx),1.0);
}
glBindTexture( GL_TEXTURE_2D, font_manager->atlas->id );
GLenum gl_format = (font_manager->atlas->depth == LCD_FILTERING_OFF) ?
GL_RED : GL_RGB;
glTexImage2D( GL_TEXTURE_2D, 0, gl_format, font_manager->atlas->width,
font_manager->atlas->height, 0, gl_format, GL_UNSIGNED_BYTE,
font_manager->atlas->data );
texture_font_delete( font );
}
// ------------------------------------------------------------------- quit ---
void reset( void )
{
p_family = VERA;
p_size = 12.0;
p_invert = 0;
p_kerning = 1;
p_hinting = 1;
p_lcd_filtering = 1;
p_gamma = 1.75;
p_interval = 0.0;
p_weight = 0.33;
p_width = 1.0;
p_faux_weight = 0.0;
p_faux_italic = 0.0;
// FT_LCD_FILTER_LIGHT
p_primary = 1.0/3.0;
p_secondary = 1.0/3.0;
p_tertiary = 0.0/3.0;
// FT_LCD_FILTER_DEFAULT
// p_primary = 3.0/9.0;
// p_secondary = 2.0/9.0;
// p_tertiary = 1.0/9.0;
build_buffer();
}
// ----------------------------------------------------------- build_buffer ---
void
build_buffer( void )
{
vec2 pen;
texture_font_t *font;
vec4 black = {{0.0, 0.0, 0.0, 1.0}};
vec4 white = {{1.0, 1.0, 1.0, 1.0}};
vec4 none = {{1.0, 1.0, 1.0, 0.0}};
vec4 color = white;
if( p_invert )
{
color = black;
}
markup_t markup = {
.family = "Source Sans Pro",
.size = 10.0,
.bold = 0,
.italic = 0,
.rise = 0.0,
.spacing = p_interval,
.gamma = p_gamma,
.foreground_color = color,
.background_color = none,
.underline = 0,
.underline_color = color,
.overline = 0,
.overline_color = color,
.strikethrough = 0,
.strikethrough_color = color,
.font = 0,
};
text_buffer_clear( buffer );
texture_atlas_t * atlas = buffer->manager->atlas;
texture_atlas_clear( atlas );
if( p_family == VERA)
{
font = texture_font_new_from_file( atlas, p_size, "fonts/Vera.ttf" );
}
else if( p_family == VERA_MONO)
{
font = texture_font_new_from_file( atlas, p_size, "fonts/VeraMono.ttf" );
}
else if( p_family == LUCKIEST_GUY)
{
font = texture_font_new_from_file( atlas, p_size, "fonts/LuckiestGuy.ttf" );
}
else if( p_family == SOURCE_SANS )
{
font = texture_font_new_from_file( atlas, p_size, "fonts/SourceSansPro-Regular.ttf" );
}
else if( p_family == SOURCE_CODE )
{
font = texture_font_new_from_file( atlas, p_size, "fonts/SourceCodePro-Regular.ttf" );
}
else if( p_family == OLD_STANDARD )
{
font = texture_font_new_from_file( atlas, p_size, "fonts/OldStandard-Regular.ttf" );
}
else if( p_family == LOBSTER )
{
font = texture_font_new_from_file( atlas, p_size, "fonts/Lobster-Regular.ttf" );
}
else
{
fprintf( stderr, "Error : Unknown family type\n" );
return;
}
if (!font)
return;
markup.font = font;
font->hinting = p_hinting;
font->kerning = p_kerning;
font->filtering = 1;
float norm = 1.0/(p_primary + 2*p_secondary + 2*p_tertiary);
font->lcd_weights[0] = (unsigned char)(p_tertiary*norm*256);
font->lcd_weights[1] = (unsigned char)(p_secondary*norm*256);
font->lcd_weights[2] = (unsigned char)(p_primary*norm*256);
font->lcd_weights[3] = (unsigned char)(p_secondary*norm*256);
font->lcd_weights[4] = (unsigned char)(p_tertiary*norm*256);
pen.x = 10;
pen.y = 600 - font->height - 10;
text_buffer_printf( buffer, &pen, &markup, text, NULL );
// Post-processing for width and orientation
vertex_buffer_t * vbuffer = buffer->buffer;
size_t i;
for( i=0; i < vector_size( vbuffer->items ); ++i )
{
ivec4 *item = (ivec4 *) vector_get( vbuffer->items, i);
glyph_vertex_t * v0 = /* x0,y0 */
(glyph_vertex_t *) vector_get( vbuffer->vertices, item->vstart+0 );
//glyph_vertex_t * v1 = /* x0,y1 */
// (glyph_vertex_t *) vector_get( vbuffer->vertices, item->vstart+1 );
glyph_vertex_t * v2 = /* x1,y1 */
(glyph_vertex_t *) vector_get( vbuffer->vertices, item->vstart+2 );
glyph_vertex_t * v3 = /* x1,y0 */
(glyph_vertex_t *) vector_get( vbuffer->vertices, item->vstart+3 );
float x0 = v0->x, y0 = v0->y;
float x1 = v2->x, y1 = v2->y;
v2->x = v3->x = x0 + (x1-x0)*p_width;
float dy = abs(y1-y0);
float dx = tan(p_faux_italic/180.0 * M_PI) * dy;
v0->x += dx;
v0->shift = fmod(v0->shift + dx-(int)(dx),1.0);
v3->x += dx;
v3->shift = fmod(v3->shift + dx-(int)(dx),1.0);
}
texture_font_delete( font );
}
// ---------------------------------------------------------------- display ---
void display( GLFWwindow* window )
{
vec4 black = {{0.0, 0.0, 0.0, 1.0}};
vec4 white = {{1.0, 1.0, 1.0, 1.0}};
if( !p_invert )
{
glClearColor( 0, 0, 0, 1 );
buffer->base_color = white;
}
else
{
glClearColor( 1, 1, 1, 1 );
buffer->base_color = black;
}
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
glUseProgram( buffer->shader );
{
glUniformMatrix4fv( glGetUniformLocation( buffer->shader, "model" ),
1, 0, model.data);
glUniformMatrix4fv( glGetUniformLocation( buffer->shader, "view" ),
1, 0, view.data);
glUniformMatrix4fv( glGetUniformLocation( buffer->shader, "projection" ),
1, 0, projection.data);
text_buffer_render( buffer );
}
TwDraw( );
glfwSwapBuffers( window );
}
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);
}
