#include "ardour/filesystem_paths.h"
+#include "canvas/wave_view.h"
+
#include "ardour_button.h"
#include "theme_manager.h"
#include "rgb_macros.h"
void
ThemeManager::on_gradient_waveforms_toggled ()
{
- // CAIROCANVAS
-#if 0
ARDOUR_UI::config()->gradient_waveforms.set (gradient_waveforms.get_active());
ARDOUR_UI::config()->set_dirty ();
-
- gnome_canvas_waveview_set_gradient_waveforms (gradient_waveforms.get_active());
-
- /* force a redraw */
- gtk_rc_reset_styles (gtk_settings_get_default());
-#endif
+ ArdourCanvas::WaveView::set_gradient_waveforms (gradient_waveforms.get_active());
}
void
namespace ArdourCanvas {
-extern void set_source_rgba (Cairo::RefPtr<Cairo::Context>, Color);
-
+ extern void color_to_hsv (Color color, double& h, double& s, double& v);
+ extern Color hsv_to_color (double h, double s, double v, double a);
+
+ extern void color_to_rgba (Color, double& r, double& g, double& b, double& a);
+ extern Color rgba_to_color (double r, double g, double b, double a);
+
+ extern void set_source_rgba (Cairo::RefPtr<Cairo::Context>, Color);
}
void render (Rect const & area, Cairo::RefPtr<Cairo::Context>) const;
void compute_bounding_box () const;
+
+ void rebuild ();
void set_samples_per_pixel (double);
void set_height (Distance);
void set_shape (Shape);
Shape shape() const;
+ static void set_gradient_waveforms (bool);
+ static bool gradient_waveforms() { return _gradient_waveforms; }
+
#ifdef CANVAS_COMPATIBILITY
void*& property_gain_src () {
return _foo_void;
ARDOUR::frameoffset_t _region_start;
mutable std::list<CacheEntry*> _cache;
+
+ PBD::ScopedConnection invalidation_connection;
+
+ static bool _gradient_waveforms;
+ static PBD::Signal0<void> InvalidateAllImages;
};
}
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#include <algorithm>
+#include <cmath>
#include <stdint.h>
#include <cairomm/context.h>
#include "canvas/utils.h"
+using std::max;
+using std::min;
+
+void
+ArdourCanvas::color_to_hsv (Color color, double& h, double& s, double& v)
+{
+ double r, g, b, a;
+ double cmax;
+ double cmin;
+ double delta;
+
+ color_to_rgba (color, r, g, b, a);
+
+ if (r > g) {
+ cmax = max (r, b);
+ } else {
+ cmax = max (g, b);
+ }
+
+ if (r < g) {
+ cmin = min (r, b);
+ } else {
+ cmin = min (g, b);
+ }
+
+ v = cmax;
+
+ delta = cmax - cmin;
+
+ if (cmax == 0) {
+ // r = g = b == 0 ... v is undefined, s = 0
+ s = 0.0;
+ h = -1.0;
+ }
+
+ if (delta != 0.0) {
+ if (cmax == r) {
+ h = fmod ((g - b)/delta, 6.0);
+ } else if (cmax == g) {
+ h = ((b - r)/delta) + 2;
+ } else {
+ h = ((r - g)/delta) + 4;
+ }
+
+ h *= 60.0;
+ }
+
+ if (delta == 0 || cmax == 0) {
+ s = 0;
+ } else {
+ s = delta / cmax;
+ }
+
+}
+
+ArdourCanvas::Color
+ArdourCanvas::hsv_to_color (double h, double s, double v, double a)
+{
+ s = min (1.0, max (0.0, s));
+ v = min (1.0, max (0.0, v));
+
+ if (s == 0) {
+ // achromatic (grey)
+ return rgba_to_color (v, v, v, a);
+ }
+
+ h = min (360.0, max (0.0, h));
+
+ double c = v * s;
+ double x = c * (1.0 - fabs(fmod(h / 60.0, 2) - 1.0));
+ double m = v - c;
+
+ if (h >= 0.0 && h < 60.0) {
+ return rgba_to_color (c + m, x + m, m, a);
+ } else if (h >= 60.0 && h < 120.0) {
+ return rgba_to_color (x + m, c + m, m, a);
+ } else if (h >= 120.0 && h < 180.0) {
+ return rgba_to_color (m, c + m, x + m, a);
+ } else if (h >= 180.0 && h < 240.0) {
+ return rgba_to_color (m, x + m, c + m, a);
+ } else if (h >= 240.0 && h < 300.0) {
+ return rgba_to_color (x + m, m, c + m, a);
+ } else if (h >= 300.0 && h < 360.0) {
+ return rgba_to_color (c + m, m, x + m, a);
+ }
+ return rgba_to_color (m, m, m, a);
+}
+
+void
+ArdourCanvas::color_to_rgba (Color color, double& r, double& g, double& b, double& a)
+{
+ r = ((color >> 24) & 0xff) / 255.0;
+ g = ((color >> 16) & 0xff) / 255.0;
+ b = ((color >> 8) & 0xff) / 255.0;
+ a = ((color >> 0) & 0xff) / 255.0;
+}
+
+ArdourCanvas::Color
+ArdourCanvas::rgba_to_color (double r, double g, double b, double a)
+{
+ /* clamp to [0 .. 1] range */
+
+ r = min (1.0, max (0.0, r));
+ g = min (1.0, max (0.0, g));
+ b = min (1.0, max (0.0, b));
+ a = min (1.0, max (0.0, a));
+
+ /* convert to [0..255] range */
+
+ unsigned int rc, gc, bc, ac;
+ rc = rint (r * 255.0);
+ gc = rint (g * 255.0);
+ bc = rint (b * 255.0);
+ ac = rint (a * 255.0);
+
+ /* build-an-integer */
+
+ return (rc << 24) | (gc << 16) | (bc << 8) | ac;
+}
+
void
ArdourCanvas::set_source_rgba (Cairo::RefPtr<Cairo::Context> context, Color color)
{
using namespace ARDOUR;
using namespace ArdourCanvas;
+bool WaveView::_gradient_waveforms = true;
+PBD::Signal0<void> WaveView::InvalidateAllImages;
+
WaveView::WaveView (Group* parent, boost::shared_ptr<ARDOUR::AudioRegion> region)
: Item (parent)
, Outline (parent)
, _amplitude (1.0)
, _region_start (0)
{
-
+ InvalidateAllImages.connect_same_thread (invalidation_connection, boost::bind (&WaveView::rebuild, this));
+}
+
+void
+WaveView::rebuild ()
+{
+ invalidate_image_cache ();
+ _canvas->item_visual_property_changed (this);
}
void
_image = Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, _n_peaks, _wave_view->_height);
Cairo::RefPtr<Cairo::Context> context = Cairo::Context::create (_image);
+ PeakData::PeakDatum pmax = 0.0;
+ PeakData::PeakDatum pmin = DBL_MAX;
- _wave_view->setup_outline_context (context);
- context->move_to (0.5, position (_peaks[0].min));
+ /* Draw the edge of the waveform, top half first, the loop back
+ * for the bottom half to create a clockwise path
+ */
+
+ context->move_to (0.5, position (_peaks[0].max));
for (int i = 1; i < _n_peaks; ++i) {
context->line_to (i + 0.5, position (_wave_view->amplitude() * _peaks[i].max));
+ pmax = max (pmax, _peaks[i].max);
+ pmin = min (pmin, _peaks[i].min);
}
- context->stroke ();
+
+ /* from final top point, move out of the clip zone */
+
+ context->line_to (_n_peaks + 10, position (0.0));
- context->move_to (0.5, position (_peaks[0].min));
- for (int i = 1; i < _n_peaks; ++i) {
+ /* bottom half, in reverse */
+
+ for (int i = _n_peaks-1; i >= 0; --i) {
context->line_to (i + 0.5, position (_wave_view->amplitude() * _peaks[i].min));
}
- context->stroke ();
+
+ /* from final bottom point, move out of the clip zone */
- set_source_rgba (context, _wave_view->_fill_color);
- for (int i = 0; i < _n_peaks; ++i) {
- context->move_to (i + 0.5, position (_wave_view->amplitude() * (_peaks[i].max)) - 1);
- context->line_to (i + 0.5, position (_wave_view->amplitude() * (_peaks[i].min)) + 1);
- context->stroke ();
+ context->line_to (-10.0, position (0.0));
+
+ context->close_path ();
+
+ if (WaveView::gradient_waveforms()) {
+
+ Cairo::RefPtr<Cairo::LinearGradient> gradient (Cairo::LinearGradient::create (0, 0, 0, _wave_view->_height));
+
+ double r, g, b, a;
+
+ color_to_rgba (_wave_view->_fill_color, r, g, b, a);
+ gradient->add_color_stop_rgba (0.1, r, g, b, a);
+ gradient->add_color_stop_rgba (0.9, r, g, b, a);
+
+ /* generate a new color for the middle of the gradient */
+ double h, s, v;
+ color_to_hsv (_wave_view->_fill_color, h, s, v);
+ /* tone down the saturation */
+ s *= 0.75;
+ Color center = hsv_to_color (h, s, v, a);
+ color_to_rgba (center, r, g, b, a);
+ gradient->add_color_stop_rgba (0.5, r, g, b, a);
+
+ context->set_source (gradient);
+ } else {
+ set_source_rgba (context, _wave_view->_fill_color);
}
+ context->fill_preserve ();
+ _wave_view->setup_outline_context (context);
+ context->stroke ();
+
if (_wave_view->show_zero_line()) {
set_source_rgba (context, _wave_view->_zero_color);
context->move_to (0, position (0.0));
{
_image.clear ();
}
-
-
+void
+WaveView::set_gradient_waveforms (bool yn)
+{
+ if (_gradient_waveforms != yn) {
+ _gradient_waveforms = yn;
+ InvalidateAllImages (); /* EMIT SIGNAL */
+ }
+}
projects / ardour.git / commitdiff