#include <iostream>
-#include <gtkmm2ext/pixfader.h>
+
+#include "pbd/stacktrace.h"
+
+#include "gtkmm2ext/pixfader.h"
+#include "gtkmm2ext/keyboard.h"
+#include "gtkmm2ext/rgb_macros.h"
+#include "gtkmm2ext/utils.h"
using namespace Gtkmm2ext;
using namespace Gtk;
-using namespace Gdk;
using namespace std;
-PixFader::PixFader (Glib::RefPtr<Pixbuf> belt, Gtk::Adjustment& adj)
- : adjustment (adj),
- pixbuf (belt)
-{
- dragging = false;
- default_value = adjustment.get_value();
- last_drawn = -1;
- pixheight = pixbuf->get_height();
+#define CORNER_RADIUS 4
+#define FADER_RESERVE (2*CORNER_RADIUS)
- view.x = 0;
- view.y = 0;
- view.width = pixbuf->get_width();
- view.height = pixheight / 2;
+std::list<PixFader::FaderImage*> PixFader::_patterns;
- unity_y = (int) rint (view.height - (default_value * view.height));
+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)
+ , _hovering (false)
+ , last_drawn (-1)
+ , dragging (false)
+{
+ default_value = adjustment.get_value();
+ update_unity_position ();
- add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK|Gdk::SCROLL_MASK);
+ add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK|Gdk::SCROLL_MASK|Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK);
adjustment.signal_value_changed().connect (mem_fun (*this, &PixFader::adjustment_changed));
adjustment.signal_changed().connect (mem_fun (*this, &PixFader::adjustment_changed));
{
}
+cairo_pattern_t*
+PixFader::find_pattern (double afr, double afg, double afb,
+ double abr, double abg, double abb,
+ int w, int h)
+{
+ 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 ()
+{
+ Gdk::Color c = get_style()->get_fg (get_state());
+ float fr, fg, fb;
+ float br, bg, bb;
+
+ fr = c.get_red_p ();
+ fg = c.get_green_p ();
+ fb = c.get_blue_p ();
+
+ c = get_style()->get_bg (get_state());
+
+ br = c.get_red_p ();
+ 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) {
+
+ surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, get_width(), get_height() * 2.0);
+ tc = cairo_create (surface);
+
+ /* paint background + border */
+
+ cairo_pattern_t* shade_pattern = cairo_pattern_create_linear (0.0, 0.0, get_width(), 0);
+ cairo_pattern_add_color_stop_rgba (shade_pattern, 0, br*0.8,bg*0.8,bb*0.8, 1.0);
+ cairo_pattern_add_color_stop_rgba (shade_pattern, 1, br*0.6,bg*0.6,bb*0.6, 1.0);
+ cairo_set_source (tc, shade_pattern);
+ cairo_rectangle (tc, 0, 0, get_width(), get_height() * 2.0);
+ cairo_fill (tc);
+
+ cairo_pattern_destroy (shade_pattern);
+
+ /* paint lower shade */
+
+ w -= 2.0;
+
+ shade_pattern = cairo_pattern_create_linear (0.0, 0.0, w, 0);
+ cairo_pattern_add_color_stop_rgba (shade_pattern, 0, fr*0.8,fg*0.8,fb*0.8, 1.0);
+ cairo_pattern_add_color_stop_rgba (shade_pattern, 1, fr*0.6,fg*0.6,fb*0.6, 1.0);
+ cairo_set_source (tc, shade_pattern);
+ Gtkmm2ext::rounded_top_half_rectangle (tc, 1.0, get_height(), w, get_height(), radius-1.5);
+ cairo_fill (tc);
+
+ cairo_pattern_destroy (shade_pattern);
+
+ pattern = cairo_pattern_create_for_surface (surface);
+
+ } else {
+
+ surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, get_width() * 2.0, get_height());
+ tc = cairo_create (surface);
+
+ /* paint right shade (background section)*/
+
+ cairo_pattern_t* shade_pattern = cairo_pattern_create_linear (0.0, 0.0, 0.0, get_height());
+ cairo_pattern_add_color_stop_rgba (shade_pattern, 0, br*0.8,bg*0.8,bb*0.8, 1.0);
+ cairo_pattern_add_color_stop_rgba (shade_pattern, 1, br*0.6,bg*0.6,bb*0.6, 1.0);
+ cairo_set_source (tc, shade_pattern);
+ cairo_rectangle (tc, 0, 0, get_width() * 2.0, get_height());
+ cairo_fill (tc);
+
+ /* paint left shade (active section/foreground) */
+
+ shade_pattern = cairo_pattern_create_linear (0.0, 0.0, 0.0, get_height());
+ cairo_pattern_add_color_stop_rgba (shade_pattern, 0, fr*0.8,fg*0.8,fb*0.8, 1.0);
+ cairo_pattern_add_color_stop_rgba (shade_pattern, 1, fr*0.6,fg*0.6,fb*0.6, 1.0);
+ cairo_set_source (tc, shade_pattern);
+ Gtkmm2ext::rounded_right_half_rectangle (tc, 0, 1, get_width(), get_height() - 2.0, radius-1.5);
+ cairo_fill (tc);
+ cairo_pattern_destroy (shade_pattern);
+
+ pattern = cairo_pattern_create_for_surface (surface);
+ }
+
+ /* cache it for others to use */
+
+ _patterns.push_back (new FaderImage (pattern, fr, fg, fb, br, bg, bb, get_width(), get_height()));
+
+ cairo_destroy (tc);
+ cairo_surface_destroy (surface);
+}
+
bool
PixFader::on_expose_event (GdkEventExpose* ev)
{
- GdkRectangle intersection;
- int dh = display_height ();
- int offset_into_pixbuf = (int) floor (view.height / ((float) view.height / dh));
-
- if (gdk_rectangle_intersect (&view, &ev->area, &intersection)) {
- get_window()->draw_pixbuf(get_style()->get_fg_gc(get_state()), pixbuf,
- intersection.x, offset_into_pixbuf + intersection.y,
- intersection.x, intersection.y,
- intersection.width, intersection.height,
- Gdk::RGB_DITHER_NONE, 0, 0);
+ Cairo::RefPtr<Cairo::Context> context = get_window()->create_cairo_context();
+ cairo_t* cr = context->cobj();
+
+ if (!pattern) {
+ create_patterns();
}
- /* always draw the line */
+ 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();
+
+ cairo_matrix_t matrix;
+
+ if (_orien == VERT) {
+
+ if (ds > h - FADER_RESERVE) {
+ ds = h - FADER_RESERVE;
+ }
- get_window()->draw_line (get_style()->get_fg_gc(get_state()), 0, unity_y, view.width - 2, unity_y);
+ cairo_set_source (cr, pattern);
+ cairo_matrix_init_translate (&matrix, 0, (h - ds));
+ cairo_pattern_set_matrix (pattern, &matrix);
+ Gtkmm2ext::rounded_rectangle (cr, 0, 0, w, h, CORNER_RADIUS-1.5);
+ cairo_fill (cr);
+
+ } else {
+
+ if (ds < FADER_RESERVE) {
+ ds = FADER_RESERVE;
+ }
+
+ /*
+ if ds == w, the pattern does not need to be translated
+ if ds == 0 (or FADER_RESERVE), the pattern needs to be moved
+ w to the left, which is -w in pattern space, and w in
+ user space
+ if ds == 10, then the pattern needs to be moved w - 10
+ to the left, which is -(w-10) in pattern space, which
+ is (w - 10) in user space
+
+ thus: translation = (w - ds)
+ */
+
+ cairo_set_source (cr, pattern);
+ cairo_matrix_init_translate (&matrix, w - ds, 0);
+ cairo_pattern_set_matrix (pattern, &matrix);
+ Gtkmm2ext::rounded_rectangle (cr, 0, 0, w, h, CORNER_RADIUS-1.5);
+ cairo_fill (cr);
+ }
+
+ /* draw the unity-position line if it's not at either end*/
+ if (unity_loc > 0) {
+ if ( _orien == VERT) {
+ if (unity_loc < h ) {
+ context->set_line_width (1);
+ context->set_source_rgb (0.0, 1.0, 0.0);
+ context->move_to (1, unity_loc);
+ context->line_to (girth - 2.0, unity_loc);
+ context->stroke ();
+ }
+ } else {
+ if ( unity_loc < w ){
+ context->set_line_width (1);
+ context->set_source_rgb (0.0, 1.0, 0.0);
+ context->move_to (unity_loc, 1);
+ context->line_to (unity_loc, girth - 2.0);
+ context->stroke ();
+ }
+ }
+ }
+
+ 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());
+ }
+
+// if (Config->get_widget_prelight()) { //pixfader does not have access to config
+ if (_hovering) {
+ Gtkmm2ext::rounded_rectangle (cr, 0, 0, get_width(), get_height(), 3);
+ cairo_set_source_rgba (cr, 0.905, 0.917, 0.925, 0.1);
+ cairo_fill (cr);
+ }
+// }
+
+ last_drawn = ds;
- last_drawn = dh;
return true;
}
void
PixFader::on_size_request (GtkRequisition* req)
{
- req->width = view.width;
- req->height = view.height;
+ if (_orien == VERT) {
+ req->width = (girth ? girth : -1);
+ req->height = (span ? span : -1);
+ } else {
+ req->height = (girth ? girth : -1);
+ req->width = (span ? span : -1);
+ }
+}
+
+void
+PixFader::on_size_allocate (Gtk::Allocation& alloc)
+{
+ DrawingArea::on_size_allocate(alloc);
+
+ if (_orien == VERT) {
+ girth = alloc.get_width ();
+ span = alloc.get_height ();
+ } else {
+ girth = alloc.get_height ();
+ span = alloc.get_width ();
+ }
+
+ if (is_realized()) {
+ /* recreate patterns in case we've changed size */
+ create_patterns ();
+ }
+
+ update_unity_position ();
}
bool
PixFader::on_button_press_event (GdkEventButton* ev)
{
- switch (ev->button) {
- case 1:
- case 2:
- if (!(ev->state & Gdk::SHIFT_MASK)) {
- add_modal_grab();
- grab_y = ev->y;
- grab_start = ev->y;
- grab_window = ev->window;
- dragging = true;
- }
- break;
- default:
- break;
- }
-
+ if (ev->type != GDK_BUTTON_PRESS) {
+ return true;
+ }
- return false;
+ if (ev->button != 1 && ev->button != 2) {
+ return false;
+ }
+
+ add_modal_grab ();
+ grab_loc = (_orien == VERT) ? ev->y : ev->x;
+ grab_start = (_orien == VERT) ? ev->y : ev->x;
+ grab_window = ev->window;
+ dragging = true;
+ gdk_pointer_grab(ev->window,false,
+ GdkEventMask( Gdk::POINTER_MOTION_MASK | Gdk::BUTTON_PRESS_MASK |Gdk::BUTTON_RELEASE_MASK),
+ NULL,NULL,ev->time);
+
+ if (ev->button == 2) {
+ set_adjustment_from_event (ev);
+ }
+
+ return true;
}
bool
PixFader::on_button_release_event (GdkEventButton* ev)
{
- double scale;
- double fract;
+ double const ev_pos = (_orien == VERT) ? ev->y : ev->x;
- if (ev->state & GDK_CONTROL_MASK) {
- if (ev->state & GDK_MOD1_MASK) {
- scale = 0.05;
- } else {
- scale = 0.1;
- }
- } else {
- scale = 1.0;
- }
-
switch (ev->button) {
case 1:
if (dragging) {
remove_modal_grab();
dragging = false;
+ gdk_pointer_ungrab (GDK_CURRENT_TIME);
+
+ if (!_hovering) {
+ Keyboard::magic_widget_drop_focus();
+ queue_draw ();
+ }
+
+ if (ev_pos == grab_start) {
- if (ev->y == grab_start) {
/* no motion - just a click */
- if (ev->y < view.height - display_height()) {
+ if (ev->state & Keyboard::TertiaryModifier) {
+ adjustment.set_value (default_value);
+ } else if (ev->state & Keyboard::GainFineScaleModifier) {
+ adjustment.set_value (adjustment.get_lower());
+ } else if ((_orien == VERT && ev_pos < display_span()) || (_orien == HORIZ && ev_pos > display_span())) {
/* above the current display height, remember X Window coords */
adjustment.set_value (adjustment.get_value() + adjustment.get_step_increment());
} else {
adjustment.set_value (adjustment.get_value() - adjustment.get_step_increment());
}
}
-
- } else {
-
- if (ev->state & Gdk::SHIFT_MASK) {
- adjustment.set_value (default_value);
- }
- }
+ return true;
+ }
break;
case 2:
if (dragging) {
remove_modal_grab();
dragging = false;
-
- fract = 1.0 - (ev->y / view.height); // inverted X Window coordinates, grrr
-
- fract = min (1.0, fract);
- fract = max (0.0, fract);
-
- adjustment.set_value (scale * fract * (adjustment.get_upper() - adjustment.get_lower()));
+ set_adjustment_from_event (ev);
+ gdk_pointer_ungrab (GDK_CURRENT_TIME);
+ return true;
}
break;
PixFader::on_scroll_event (GdkEventScroll* ev)
{
double scale;
-
- if (ev->state & GDK_CONTROL_MASK) {
- if (ev->state & GDK_MOD1_MASK) {
- scale = 0.05;
+ bool ret = false;
+
+ if (ev->state & Keyboard::GainFineScaleModifier) {
+ if (ev->state & Keyboard::GainExtraFineScaleModifier) {
+ scale = 0.01;
} else {
- scale = 0.1;
+ scale = 0.05;
}
} else {
- scale = 0.5;
+ scale = 0.25;
}
- switch (ev->direction) {
+ if (_orien == VERT) {
- case GDK_SCROLL_UP:
- /* wheel up */
- adjustment.set_value (adjustment.get_value() + (adjustment.get_page_increment() * scale));
- break;
- case GDK_SCROLL_DOWN:
- /* wheel down */
- adjustment.set_value (adjustment.get_value() - (adjustment.get_page_increment() * scale));
- break;
- default:
- break;
+ /* should left/right scroll affect vertical faders ? */
+
+ switch (ev->direction) {
+
+ case GDK_SCROLL_UP:
+ adjustment.set_value (adjustment.get_value() + (adjustment.get_page_increment() * scale));
+ ret = true;
+ break;
+ case GDK_SCROLL_DOWN:
+ adjustment.set_value (adjustment.get_value() - (adjustment.get_page_increment() * scale));
+ ret = true;
+ break;
+ default:
+ break;
+ }
+ } else {
+
+ /* up/down scrolls should definitely affect horizontal faders
+ because they are so much easier to use
+ */
+
+ switch (ev->direction) {
+
+ case GDK_SCROLL_RIGHT:
+ case GDK_SCROLL_UP:
+ adjustment.set_value (adjustment.get_value() + (adjustment.get_page_increment() * scale));
+ ret = true;
+ break;
+ case GDK_SCROLL_LEFT:
+ case GDK_SCROLL_DOWN:
+ adjustment.set_value (adjustment.get_value() - (adjustment.get_page_increment() * scale));
+ ret = true;
+ break;
+ default:
+ break;
+ }
}
- return false;
+ return ret;
}
bool
PixFader::on_motion_notify_event (GdkEventMotion* ev)
{
if (dragging) {
- double fract;
- double delta;
- double scale;
-
+ double scale = 1.0;
+ double const ev_pos = (_orien == VERT) ? ev->y : ev->x;
+
if (ev->window != grab_window) {
- grab_y = ev->y;
+ grab_loc = ev_pos;
grab_window = ev->window;
return true;
}
- if (ev->state & GDK_CONTROL_MASK) {
- if (ev->state & GDK_MOD1_MASK) {
+ if (ev->state & Keyboard::GainFineScaleModifier) {
+ if (ev->state & Keyboard::GainExtraFineScaleModifier) {
scale = 0.05;
} else {
scale = 0.1;
}
- } else {
- scale = 1.0;
}
- delta = ev->y - grab_y;
- grab_y = ev->y;
+ double const delta = ev_pos - grab_loc;
+ grab_loc = ev_pos;
- fract = (delta / view.height);
+ double fract = (delta / span);
fract = min (1.0, fract);
fract = max (-1.0, fract);
// X Window is top->bottom for 0..Y
- fract = -fract;
+ if (_orien == VERT) {
+ fract = -fract;
+ }
adjustment.set_value (adjustment.get_value() + scale * fract * (adjustment.get_upper() - adjustment.get_lower()));
}
void
PixFader::adjustment_changed ()
{
- if (display_height() != last_drawn) {
+ if (display_span() != last_drawn) {
queue_draw ();
}
}
+/** @return pixel offset of the current value from the right or bottom of the fader */
int
-PixFader::display_height ()
+PixFader::display_span ()
{
- float fract = (adjustment.get_upper() - adjustment.get_value ()) / ((adjustment.get_upper() - adjustment.get_lower()));
- return (int) floor (view.height * (1.0 - fract));
+ float fract = (adjustment.get_value () - adjustment.get_lower()) / ((adjustment.get_upper() - adjustment.get_lower()));
+ int ds;
+ if (_orien == VERT) {
+ ds = (int)floor ( span * (1.0 - fract));
+ } else {
+ ds = (int)floor (span * fract);
+ }
+
+ return ds;
+}
+
+void
+PixFader::update_unity_position ()
+{
+ if (_orien == VERT) {
+ unity_loc = (int) rint (span * (1 - (default_value / (adjustment.get_upper() - adjustment.get_lower())))) - 1;
+ } else {
+ unity_loc = (int) rint (default_value * span / (adjustment.get_upper() - adjustment.get_lower()));
+ }
+
+ queue_draw ();
+}
+
+bool
+PixFader::on_enter_notify_event (GdkEventCrossing*)
+{
+ _hovering = true;
+ Keyboard::magic_widget_grab_focus ();
+ queue_draw ();
+ return false;
+}
+
+bool
+PixFader::on_leave_notify_event (GdkEventCrossing*)
+{
+ if (!dragging) {
+ _hovering = false;
+ Keyboard::magic_widget_drop_focus();
+ queue_draw ();
+ }
+ return false;
+}
+
+void
+PixFader::set_adjustment_from_event (GdkEventButton* ev)
+{
+ double fract = (_orien == VERT) ? (1.0 - (ev->y / span)) : (ev->x / span);
+
+ fract = min (1.0, fract);
+ fract = max (0.0, fract);
+
+ adjustment.set_value (fract * (adjustment.get_upper () - adjustment.get_lower ()));
+}
+
+void
+PixFader::set_default_value (float d)
+{
+ default_value = d;
+ update_unity_position ();
+}
+
+void
+PixFader::set_text (const std::string& str)
+{
+ _text = str;
+
+ if (!_layout && !_text.empty()) {
+ _layout = Pango::Layout::create (get_pango_context());
+ }
+
+ if (_layout) {
+ _layout->set_text (str);
+ _layout->get_pixel_size (_text_width, _text_height);
+ }
+
+ queue_resize ();
+}
+
+void
+PixFader::on_state_changed (Gtk::StateType old_state)
+{
+ 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