diff options
Diffstat (limited to 'libs/litehtml/containers/cairo/container_cairo_pango.cpp')
| -rw-r--r-- | libs/litehtml/containers/cairo/container_cairo_pango.cpp | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/libs/litehtml/containers/cairo/container_cairo_pango.cpp b/libs/litehtml/containers/cairo/container_cairo_pango.cpp deleted file mode 100644 index e218d7fd45..0000000000 --- a/libs/litehtml/containers/cairo/container_cairo_pango.cpp +++ /dev/null @@ -1,180 +0,0 @@ -#include "container_cairo_pango.h" - -container_cairo_pango::container_cairo_pango() -{ - m_temp_surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 2, 2); - m_temp_cr = cairo_create(m_temp_surface); -} - -container_cairo_pango::~container_cairo_pango() -{ - clear_images(); - cairo_surface_destroy(m_temp_surface); - cairo_destroy(m_temp_cr); -} - -litehtml::uint_ptr container_cairo_pango::create_font(const char *faceName, int size, int weight, litehtml::font_style italic, - unsigned int decoration, litehtml::font_metrics *fm) -{ - PangoFontDescription *desc = pango_font_description_from_string (faceName); - pango_font_description_set_absolute_size(desc, size * PANGO_SCALE); - if(italic == litehtml::font_style_italic) - { - pango_font_description_set_style(desc, PANGO_STYLE_ITALIC); - } else - { - pango_font_description_set_style(desc, PANGO_STYLE_NORMAL); - } - PangoWeight fnt_weight; - if(weight >= 0 && weight < 150) fnt_weight = PANGO_WEIGHT_THIN; - else if(weight >= 150 && weight < 250) fnt_weight = PANGO_WEIGHT_ULTRALIGHT; - else if(weight >= 250 && weight < 350) fnt_weight = PANGO_WEIGHT_LIGHT; - else if(weight >= 350 && weight < 450) fnt_weight = PANGO_WEIGHT_NORMAL; - else if(weight >= 450 && weight < 550) fnt_weight = PANGO_WEIGHT_MEDIUM; - else if(weight >= 550 && weight < 650) fnt_weight = PANGO_WEIGHT_SEMIBOLD; - else if(weight >= 650 && weight < 750) fnt_weight = PANGO_WEIGHT_BOLD; - else if(weight >= 750 && weight < 850) fnt_weight = PANGO_WEIGHT_ULTRABOLD; - else fnt_weight = PANGO_WEIGHT_HEAVY; - - pango_font_description_set_weight(desc, fnt_weight); - - cairo_font* ret = nullptr; - - if(fm) - { - cairo_save(m_temp_cr); - PangoLayout *layout = pango_cairo_create_layout(m_temp_cr); - PangoContext *context = pango_layout_get_context(layout); - PangoLanguage *language = pango_language_get_default(); - pango_layout_set_font_description(layout, desc); - PangoFontMetrics *metrics = pango_context_get_metrics(context, desc, language); - - fm->ascent = PANGO_PIXELS((double)pango_font_metrics_get_ascent(metrics)); - fm->descent = PANGO_PIXELS((double)pango_font_metrics_get_descent(metrics)); - fm->height = fm->ascent + fm->descent; - fm->x_height = fm->height; - - pango_layout_set_text(layout, "x", 1); - - int x_width, x_height; - pango_layout_get_pixel_size(layout, &x_width, &x_height); - - fm->x_height = x_height; - - cairo_restore(m_temp_cr); - - g_object_unref(layout); - pango_font_metrics_unref(metrics); - - ret = new cairo_font; - ret->font = desc; - ret->size = size; - ret->strikeout = (decoration & litehtml::font_decoration_linethrough) != 0; - ret->underline = (decoration & litehtml::font_decoration_underline) != 0; - ret->ascent = fm->ascent; - ret->descent = fm->descent; - - ret->underline_thickness = pango_font_metrics_get_underline_thickness(metrics); - ret->underline_position = -pango_font_metrics_get_underline_position(metrics); - pango_quantize_line_geometry(&ret->underline_thickness, &ret->underline_position); - ret->underline_thickness = PANGO_PIXELS(ret->underline_thickness); - ret->underline_position = -1;//PANGO_PIXELS(ret->underline_position); - - ret->strikethrough_thickness = pango_font_metrics_get_strikethrough_thickness(metrics); - ret->strikethrough_position = pango_font_metrics_get_strikethrough_position(metrics); - pango_quantize_line_geometry(&ret->strikethrough_thickness, &ret->strikethrough_position); - ret->strikethrough_thickness = PANGO_PIXELS(ret->strikethrough_thickness); - ret->strikethrough_position = PANGO_PIXELS(ret->strikethrough_position); - } - - return (litehtml::uint_ptr) ret; -} - -void container_cairo_pango::delete_font(litehtml::uint_ptr hFont) -{ - auto* fnt = (cairo_font*) hFont; - if(fnt) - { - pango_font_description_free(fnt->font); - delete fnt; - } -} - -int container_cairo_pango::text_width(const char *text, litehtml::uint_ptr hFont) -{ - auto* fnt = (cairo_font*) hFont; - - cairo_save(m_temp_cr); - - PangoLayout *layout = pango_cairo_create_layout(m_temp_cr); - pango_layout_set_font_description(layout, fnt->font); - - pango_layout_set_text(layout, text, -1); - pango_cairo_update_layout (m_temp_cr, layout); - - int x_width, x_height; - pango_layout_get_pixel_size(layout, &x_width, &x_height); - - cairo_restore(m_temp_cr); - - g_object_unref(layout); - - return (int) x_width; -} - -void container_cairo_pango::draw_text(litehtml::uint_ptr hdc, const char *text, litehtml::uint_ptr hFont, - litehtml::web_color color, const litehtml::position &pos) -{ - auto* fnt = (cairo_font*) hFont; - auto* cr = (cairo_t*) hdc; - cairo_save(cr); - - apply_clip(cr); - - set_color(cr, color); - - PangoLayout *layout = pango_cairo_create_layout(cr); - pango_layout_set_font_description (layout, fnt->font); - pango_layout_set_text (layout, text, -1); - - int baseline = PANGO_PIXELS(pango_layout_get_baseline(layout)); - - PangoRectangle ink_rect, logical_rect; - pango_layout_get_pixel_extents(layout, &ink_rect, &logical_rect); - - int text_baseline = pos.height - fnt->descent; - - int x = pos.left() + logical_rect.x; - int y = pos.top() + logical_rect.y + text_baseline - baseline; - - cairo_move_to(cr, x, y); - pango_cairo_update_layout (cr, layout); - pango_cairo_show_layout (cr, layout); - - int tw = 0; - - if(fnt->underline || fnt->strikeout) - { - tw = text_width(text, hFont); - } - - if(fnt->underline) - { - cairo_set_line_width(cr, fnt->underline_thickness); - cairo_move_to(cr, x, pos.top() + text_baseline - fnt->underline_position + 0.5); - cairo_line_to(cr, x + tw, pos.top() + text_baseline - fnt->underline_position + 0.5); - cairo_stroke(cr); - } - if(fnt->strikeout) - { - cairo_set_line_width(cr, fnt->strikethrough_thickness); - cairo_move_to(cr, x, pos.top() + text_baseline - fnt->strikethrough_position - 0.5); - cairo_line_to(cr, x + tw, pos.top() + text_baseline - fnt->strikethrough_position - 0.5); - cairo_stroke(cr); - } - - cairo_restore(cr); - - g_object_unref(layout); -} - |