#include <iostream>
+
+#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 std;
-int PixFader::fine_scale_modifier = Keyboard::PrimaryModifier;
-int PixFader::extra_fine_scale_modifier = Keyboard::SecondaryModifier;
+#define CORNER_RADIUS 4
+#define FADER_RESERVE (2*CORNER_RADIUS)
-PixFader::PixFader (Glib::RefPtr<Gdk::Pixbuf> belt, Gtk::Adjustment& adj, int orientation, int fader_length)
+std::list<PixFader::FaderImage*> PixFader::_patterns;
- : adjustment (adj),
- pixbuf (belt),
- _orien(orientation)
+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)
{
- Cairo::Format format;
-
- dragging = false;
default_value = adjustment.get_value();
- last_drawn = -1;
-
- view.x = 0;
- view.y = 0;
-
- if (orientation == VERT) {
- view.width = girth = pixbuf->get_width();
- } else {
- view.height = girth = pixbuf->get_height();
- }
-
- set_fader_length (fader_length);
+ update_unity_position ();
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));
-
- if (pixbuf->get_has_alpha()) {
- format = Cairo::FORMAT_ARGB32;
- } else {
- format = Cairo::FORMAT_RGB24;
- }
- belt_surface = Cairo::ImageSurface::create (format, pixbuf->get_width(), pixbuf->get_height());
- belt_context = Cairo::Context::create (belt_surface);
- Gdk::Cairo::set_source_pixbuf (belt_context, pixbuf, 0.0, 0.0);
- belt_context->paint();
-
- left_r = 0;
- left_g = 0;
- left_b = 0;
-
- right_r = 0;
- right_g = 0;
- right_b = 0;
}
PixFader::~PixFader ()
{
}
+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::set_border_colors (uint32_t left, uint32_t right)
+PixFader::create_patterns ()
{
- int r, g, b;
- UINT_TO_RGB(left, &r, &g, &b);
- left_r = r/255.0;
- left_g = g/255.0;
- left_b = b/255.0;
- UINT_TO_RGB(right, &r, &g, &b);
- right_r = r/255.0;
- right_g = g/255.0;
- right_b = b/255.0;
+ 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)
{
- Cairo::RefPtr<Cairo::Context> context = get_window()->create_cairo_context();
- int srcx, srcy;
- int const ds = display_span ();
- int offset_into_pixbuf = (int) floor (span / ((float) span / ds));
+ Cairo::RefPtr<Cairo::Context> context = get_window()->create_cairo_context();
+ cairo_t* cr = context->cobj();
- /* account for fader lengths that are shorter than the fader pixbuf */
- if (_orien == VERT) {
- offset_into_pixbuf += pixbuf->get_height() / 2 - view.height;
- } else {
- offset_into_pixbuf += pixbuf->get_width() / 2 - view.width;
+ if (!pattern) {
+ create_patterns();
}
- context->rectangle (ev->area.x, ev->area.y, ev->area.width, ev->area.height);
- context->clip ();
-
- if (_orien == VERT) {
- srcx = 0;
- srcy = offset_into_pixbuf;
- } else {
- srcx = offset_into_pixbuf;
- srcy = 0;
- }
-
- /* fader */
-
- context->save();
- context->set_source (belt_surface, -srcx, -srcy);
- context->rectangle (0, 0, get_width(), get_height());
- context->clip ();
- context->paint();
- context->restore();
-
- /* bounding box lines (2 colors for nicer visuals) */
-
- /* top and left side */
-
- context->set_line_width (1);
- context->set_source_rgb (left_r, left_g, left_b);
- context->move_to (view.width - 1, 0); /* upper right */
- context->line_to (0, 0); /* upper left */
- context->line_to (0, view.height - 1);/* lower left */
- context->stroke ();
-
- /* bottom & right side */
-
- context->set_line_width (1);
- context->set_source_rgb (right_r, right_g, right_b);
- context->move_to (0, view.height - 0.5); /* lower left */
- context->line_to (view.width - 0.5, view.height - 0.5); /* lower right */
- context->line_to (view.width - 0.5, 0); /* upper right */
- context->stroke ();
-
- /* always draw the unity-position 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) {
- 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, unity_loc);
- context->stroke ();
+
+ if (ds > h - FADER_RESERVE) {
+ ds = h - FADER_RESERVE;
+ }
+
+ 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 {
- 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 - 1);
- context->stroke ();
+
+ 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) {
+ context->set_line_width (1);
+ context->set_line_cap (Cairo::LINE_CAP_ROUND);
+ Gdk::Color c = get_style()->get_fg (Gtk::STATE_ACTIVE);
+ context->set_source_rgba (c.get_red_p()*1.5, c.get_green_p()*1.5, c.get_blue_p()*1.5, 0.85);
+ if ( _orien == VERT) {
+ if (unity_loc < h ) {
+ context->move_to (1.5, unity_loc + .5);
+ context->line_to (girth - 1.5, unity_loc + .5);
+ context->stroke ();
+ }
+ } else {
+ if ( unity_loc < w ){
+ context->move_to (unity_loc + .5, 1.5);
+ context->line_to (unity_loc + .5, girth - 1.5);
+ 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 (!get_sensitive()) {
+ Gtkmm2ext::rounded_rectangle (cr, 0, 0, get_width(), get_height(), 3);
+ cairo_set_source_rgba (cr, 0.505, 0.517, 0.525, 0.4);
+ cairo_fill (cr);
+ } else 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;
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)
{
if (ev->type != GDK_BUTTON_PRESS) {
- return false;
+ return true;
}
if (ev->button != 1 && ev->button != 2) {
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);
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->state & Keyboard::TertiaryModifier) {
adjustment.set_value (default_value);
- } else if (ev->state & fine_scale_modifier) {
+ } else if (ev->state & Keyboard::GainFineScaleModifier) {
adjustment.set_value (adjustment.get_lower());
- } else if ((_orien == VERT && ev_pos < span - display_span()) || (_orien == HORIZ && ev_pos > span - display_span())) {
+ } 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());
}
}
-
+ return true;
}
break;
remove_modal_grab();
dragging = false;
set_adjustment_from_event (ev);
+ gdk_pointer_ungrab (GDK_CURRENT_TIME);
+ return true;
}
break;
double scale;
bool ret = false;
- if (ev->state & fine_scale_modifier) {
- if (ev->state & extra_fine_scale_modifier) {
+ if (ev->state & Keyboard::GainFineScaleModifier) {
+ if (ev->state & Keyboard::GainExtraFineScaleModifier) {
scale = 0.01;
} else {
scale = 0.05;
return true;
}
- if (ev->state & fine_scale_modifier) {
- if (ev->state & extra_fine_scale_modifier) {
+ if (ev->state & Keyboard::GainFineScaleModifier) {
+ if (ev->state & Keyboard::GainExtraFineScaleModifier) {
scale = 0.05;
} else {
scale = 0.1;
PixFader::display_span ()
{
float fract = (adjustment.get_value () - adjustment.get_lower()) / ((adjustment.get_upper() - adjustment.get_lower()));
- return (_orien != VERT) ? (int)floor (span * (1.0 - fract)) : (int)floor (span * fract);
+ int ds;
+ if (_orien == VERT) {
+ ds = (int)floor ( span * (1.0 - fract));
+ } else {
+ ds = (int)floor (span * fract);
+ }
+
+ return ds;
}
void
-PixFader::set_fader_length (int l)
+PixFader::update_unity_position ()
{
if (_orien == VERT) {
- view.height = span = l;
- unity_loc = (int) rint (view.height - (default_value * view.height)) - 1;
+ unity_loc = (int) rint (span * (1 - (default_value / (adjustment.get_upper() - adjustment.get_lower())))) - 1;
} else {
- view.width = span = l;
- unity_loc = (int) rint (default_value * view.width);
+ 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*)
{
- Keyboard::magic_widget_drop_focus();
+ if (!dragging) {
+ _hovering = false;
+ Keyboard::magic_widget_drop_focus();
+ queue_draw ();
+ }
return false;
}
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