#include <iostream>
+#include "pbd/stacktrace.h"
+
#include "gtkmm2ext/pixfader.h"
#include "gtkmm2ext/keyboard.h"
#include "gtkmm2ext/rgb_macros.h"
#define CORNER_RADIUS 4
#define FADER_RESERVE (2*CORNER_RADIUS)
+std::list<PixFader::FaderImage*> PixFader::_patterns;
+
PixFader::PixFader (Gtk::Adjustment& adj, int orientation, int fader_length, int fader_girth)
: adjustment (adj)
, span (fader_length)
, girth (fader_girth)
, _orien (orientation)
, pattern (0)
- , texture_pattern (0)
, _hovering (false)
, last_drawn (-1)
, dragging (false)
PixFader::~PixFader ()
{
- free_patterns ();
}
-void
-PixFader::free_patterns ()
+cairo_pattern_t*
+PixFader::find_pattern (double afr, double afg, double afb,
+ double abr, double abg, double abb,
+ int w, int h)
{
- if (pattern) {
- cairo_pattern_destroy (pattern);
- pattern = 0;
- }
- if (texture_pattern) {
- cairo_pattern_destroy (texture_pattern);
- texture_pattern = 0;
+ for (list<FaderImage*>::iterator f = _patterns.begin(); f != _patterns.end(); ++f) {
+ if ((*f)->matches (afr, afg, afb, abr, abg, abb, w, h)) {
+ return (*f)->pattern;
+ }
}
+ return 0;
}
void
PixFader::create_patterns ()
{
- free_patterns ();
-
Gdk::Color c = get_style()->get_fg (get_state());
float fr, fg, fb;
float br, bg, bb;
bg = c.get_green_p ();
bb = c.get_blue_p ();
+ if ( !_text.empty()) {
+ _layout->get_pixel_size (_text_width, _text_height);
+ } else {
+ _text_width = 0;
+ _text_height = 0;
+ }
+
+ c = get_style()->get_text (get_state());
+
+ text_r = c.get_red_p ();
+ text_g = c.get_green_p ();
+ text_b = c.get_blue_p ();
+
cairo_surface_t* surface;
cairo_t* tc = 0;
float radius = CORNER_RADIUS;
double w = get_width();
+
+ if (w <= 1 || get_height() <= 1) {
+ return;
+ }
+
+ if ((pattern = find_pattern (fr, fg, fb, br, bg, bb, get_width(), get_height())) != 0) {
+ /* found it - use it */
+ return;
+ }
if (_orien == VERT) {
pattern = cairo_pattern_create_for_surface (surface);
}
- cairo_destroy (tc);
- cairo_surface_destroy (surface);
+ /* cache it for others to use */
- if ( !_text.empty()) {
- _layout->get_pixel_size (_text_width, _text_height);
- } else {
- _text_width = 0;
- _text_height = 0;
- }
+ _patterns.push_back (new FaderImage (pattern, fr, fg, fb, br, bg, bb, get_width(), get_height()));
- c = get_style()->get_text (get_state());
-
- text_r = c.get_red_p ();
- text_g = c.get_green_p ();
- text_b = c.get_blue_p ();
+ cairo_destroy (tc);
+ cairo_surface_destroy (surface);
}
bool
Cairo::RefPtr<Cairo::Context> context = get_window()->create_cairo_context();
cairo_t* cr = context->cobj();
- cairo_rectangle (cr, ev->area.x, ev->area.y, ev->area.width, ev->area.height);
- cairo_clip (cr);
-
if (!pattern) {
create_patterns();
}
-
+
+ if (!pattern) {
+
+ /* this isn't supposed to be happen, but some wackiness whereby
+ the pixfader ends up with a 1xN or Nx1 size allocation
+ leads to it. the basic wackiness needs fixing but we
+ shouldn't crash. just fill in the expose area with
+ our bg color.
+ */
+
+ Gdk::Color c = get_style()->get_bg (get_state());
+ float br, bg, bb;
+
+ br = c.get_red_p ();
+ bg = c.get_green_p ();
+ bb = c.get_blue_p ();
+ cairo_set_source_rgb (cr, br, bg, bb);
+ cairo_rectangle (cr, ev->area.x, ev->area.y, ev->area.width, ev->area.height);
+ cairo_fill (cr);
+
+ return true;
+ }
+
+ cairo_rectangle (cr, ev->area.x, ev->area.y, ev->area.width, ev->area.height);
+ cairo_clip (cr);
+
int ds = display_span ();
float w = get_width();
float h = get_height();
}
}
}
-
- if ( !_text.empty() ) {
- cairo_new_path (cr);
+ if ( !_text.empty() ) {
/* center text */
+ cairo_new_path (cr);
cairo_move_to (cr, (get_width() - _text_width)/2.0, get_height()/2.0 - _text_height/2.0);
-
cairo_set_source_rgba (cr, text_r, text_g, text_b, 0.9);
pango_cairo_show_layout (cr, _layout->gobj());
}
PixFader::on_size_request (GtkRequisition* req)
{
if (_orien == VERT) {
- req->width = girth;
- req->height = span;
+ req->width = (girth ? girth : -1);
+ req->height = (span ? span : -1);
} else {
- req->height = girth;
- req->width = span;
+ req->height = (girth ? girth : -1);
+ req->width = (span ? span : -1);
}
}
if (_orien == VERT) {
girth = alloc.get_width ();
+ span = alloc.get_height ();
} else {
girth = alloc.get_height ();
+ span = alloc.get_width ();
}
- update_unity_position ();
-
if (is_realized()) {
- create_patterns();
- queue_draw ();
+ /* recreate patterns in case we've changed size */
+ create_patterns ();
}
+
+ update_unity_position ();
}
bool
adjustment.set_value (adjustment.get_value() - adjustment.get_step_increment());
}
}
-
+ return true;
}
break;
dragging = false;
set_adjustment_from_event (ev);
gdk_pointer_ungrab (GDK_CURRENT_TIME);
+ return true;
}
break;
return ds;
}
-void
-PixFader::set_fader_length (int l)
-{
- span = l;
- update_unity_position ();
- queue_resize ();
-}
-
void
PixFader::update_unity_position ()
{
if (_layout) {
_layout->set_text (str);
+ _layout->get_pixel_size (_text_width, _text_height);
}
queue_resize ();
Widget::on_state_changed (old_state);
create_patterns ();
}
+
+void
+PixFader::on_style_changed (const Glib::RefPtr<Gtk::Style>&)
+{
+ if (_layout) {
+ std::string txt = _layout->get_text();
+ _layout.clear (); // drop reference to existing layout
+ set_text (txt);
+ }
+
+ /* remember that all patterns are cached and not owned by an individual
+ pixfader. we will lazily create a new pattern when needed.
+ */
+
+ pattern = 0;
+}
projects / ardour.git / blobdiff