#include <cairomm/context.h>
#include <cairomm/surface.h>
+#include <pango/pangocairo.h>
#include "gtkmm2ext/gui_thread.h"
Cairo::RefPtr<Cairo::Context> _ctx;
Cairo::Context ctx;
};
+
+class PangoLayout {
+ public:
+ /** Create a new PangoLayout Text Display
+ * @param c CairoContext for the layout
+ * @param font_name a font-description e.g. "Mono 8px"
+ */
+ PangoLayout (Cairo::Context* c, std::string font_name) {
+ ::PangoLayout* pl = pango_cairo_create_layout (c->cobj ());
+ _layout = Glib::wrap (pl);
+ Pango::FontDescription fd (font_name);
+ _layout->set_font_description (fd);
+ }
+
+ ~PangoLayout () {}
+
+ /** Gets the text in the layout. The returned text should not
+ * be freed or modified.
+ *
+ * @return The text in the @a layout.
+ */
+ std::string get_text () const {
+ return _layout->get_text ();
+ }
+ /** Set the text of the layout.
+ * @param text The text for the layout.
+ */
+ void set_text (const std::string& text) {
+ _layout->set_text (text);
+ }
+
+ /** Returns the number of Unicode characters in the
+ * the text of @a layout.
+ *
+ * @return The number of Unicode characters
+ * in the text of @a layout.
+ */
+ int get_character_count () const {
+ return _layout->get_character_count ();
+ }
+
+ /** Sets the layout text and attribute list from marked-up text (see markup format).
+ * Replaces the current text and attribute list.
+ * @param markup Some marked-up text.
+ */
+ void set_markup (const std::string& markup) {
+ _layout->set_markup (markup);
+ }
+
+ /** Sets the width to which the lines of the Pango::Layout should wrap or
+ * ellipsized. The default value is -1: no width set.
+ *
+ * @param width The desired width in Pango units, or -1 to indicate that no
+ * wrapping or ellipsization should be performed.
+ */
+ void set_width (int width) {
+ _layout->set_width (width * PANGO_SCALE);
+ }
+
+ /** Gets the width to which the lines of the Pango::Layout should wrap.
+ *
+ * @return The width in Pango units, or -1 if no width set.
+ */
+ int get_width () const {
+ return _layout->get_width () / PANGO_SCALE;
+ }
+
+ /** Sets the type of ellipsization being performed for @a layout.
+ * Depending on the ellipsization mode @a ellipsize text is
+ * removed from the start, middle, or end of text so they
+ * fit within the width and height of layout set with
+ * set_width() and set_height().
+ *
+ * If the layout contains characters such as newlines that
+ * force it to be layed out in multiple paragraphs, then whether
+ * each paragraph is ellipsized separately or the entire layout
+ * is ellipsized as a whole depends on the set height of the layout.
+ * See set_height() for details.
+ *
+ * @param ellipsize The new ellipsization mode for @a layout.
+ */
+ void set_ellipsize (Pango::EllipsizeMode ellipsize) {
+ _layout->set_ellipsize (ellipsize);
+ }
+
+ /** Gets the type of ellipsization being performed for @a layout.
+ * See set_ellipsize()
+ *
+ * @return The current ellipsization mode for @a layout.
+ *
+ * Use is_ellipsized() to query whether any paragraphs
+ * were actually ellipsized.
+ */
+ Pango::EllipsizeMode get_ellipsize () const {
+ return _layout->get_ellipsize ();
+ }
+
+ /** Queries whether the layout had to ellipsize any paragraphs.
+ *
+ * This returns <tt>true</tt> if the ellipsization mode for @a layout
+ * is not Pango::ELLIPSIZE_NONE, a positive width is set on @a layout,
+ * and there are paragraphs exceeding that width that have to be
+ * ellipsized.
+ *
+ * @return <tt>true</tt> if any paragraphs had to be ellipsized, <tt>false</tt>
+ * otherwise.
+ */
+ bool is_ellipsized () const {
+ return _layout->is_ellipsized ();
+ }
+
+ /** Sets the wrap mode; the wrap mode only has effect if a width
+ * is set on the layout with set_width().
+ * To turn off wrapping, set the width to -1.
+ *
+ * @param wrap The wrap mode.
+ */
+ void set_wrap (Pango::WrapMode wrap) {
+ _layout->set_width (wrap);
+ }
+
+ /** Gets the wrap mode for the layout.
+ *
+ * Use is_wrapped() to query whether any paragraphs
+ * were actually wrapped.
+ *
+ * @return Active wrap mode.
+ */
+ Pango::WrapMode get_wrap () const {
+ return _layout->get_wrap ();
+ }
+
+ /** Queries whether the layout had to wrap any paragraphs.
+ *
+ * This returns <tt>true</tt> if a positive width is set on @a layout,
+ * ellipsization mode of @a layout is set to Pango::ELLIPSIZE_NONE,
+ * and there are paragraphs exceeding the layout width that have
+ * to be wrapped.
+ *
+ * @return <tt>true</tt> if any paragraphs had to be wrapped, <tt>false</tt>
+ * otherwise.
+ */
+ bool is_wrapped () const {
+ return _layout->is_wrapped ();
+ }
+
+ /** Determines the logical width and height of a Pango::Layout
+ * in device units.
+ */
+ int get_pixel_size (lua_State *L) {
+ int width, height;
+ _layout->get_pixel_size (width, height);
+ luabridge::Stack<int>::push (L, width);
+ luabridge::Stack<int>::push (L, height);
+ return 2;
+ }
+
+
+ /** Draws a Layout in the specified Cairo @a context. The top-left
+ * corner of the Layout will be drawn at the current point of the
+ * cairo context.
+ *
+ * @param context A Cairo context.
+ */
+ void show_in_cairo_context (Cairo::Context* c) {
+ pango_cairo_update_layout (c->cobj (), _layout->gobj());
+ pango_cairo_show_layout (c->cobj (), _layout->gobj());
+ }
+
+ private:
+ Glib::RefPtr<Pango::Layout> _layout;
+};
+
}; // namespace
////////////////////////////////////////////////////////////////////////////////
.addFunction ("get_data", &LuaCairo::ImageSurface::get_data)
.endClass ()
+ .beginClass <LuaCairo::PangoLayout> ("PangoLayout")
+ .addConstructor <void (*) (Cairo::Context*, std::string)> ()
+ .addCFunction ("get_pixel_size", &LuaCairo::PangoLayout::get_pixel_size)
+ .addFunction ("get_text", &LuaCairo::PangoLayout::get_text)
+ .addFunction ("set_text", &LuaCairo::PangoLayout::set_text)
+ .addFunction ("show_in_cairo_context", &LuaCairo::PangoLayout::show_in_cairo_context)
+ .addFunction ("get_character_count", &LuaCairo::PangoLayout::get_character_count)
+ .addFunction ("set_markup", &LuaCairo::PangoLayout::set_markup)
+ .addFunction ("set_width", &LuaCairo::PangoLayout::set_width)
+ .addFunction ("set_ellipsize", &LuaCairo::PangoLayout::set_ellipsize)
+ .addFunction ("get_ellipsize", &LuaCairo::PangoLayout::get_ellipsize)
+ .addFunction ("is_ellipsized", &LuaCairo::PangoLayout::is_ellipsized)
+ .addFunction ("set_wrap", &LuaCairo::PangoLayout::set_wrap)
+ .addFunction ("get_wrap", &LuaCairo::PangoLayout::get_wrap)
+ .addFunction ("is_wrapped", &LuaCairo::PangoLayout::is_wrapped)
+ .endClass ()
+
+ /* enums */
+ .beginNamespace ("EllipsizeMode")
+ .addConst ("None", Pango::ELLIPSIZE_NONE)
+ .addConst ("Start", Pango::ELLIPSIZE_START)
+ .addConst ("Middle", Pango::ELLIPSIZE_MIDDLE)
+ .addConst ("End", Pango::ELLIPSIZE_END)
+ .endNamespace ()
+
+ .beginNamespace ("WrapMode")
+ .addConst ("Word", Pango::WRAP_WORD)
+ .addConst ("Char", Pango::WRAP_CHAR)
+ .addConst ("WordChar", Pango::WRAP_WORD_CHAR)
+ .endNamespace ()
+
.endNamespace ();
/* Lua/cairo bindings operate on Cairo::Context, there is no Cairo::RefPtr wrapper [yet].
projects / ardour.git / blobdiff