X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fgtkmm2ext%2Fpixfader.cc;h=23510e824eb3784f4b1c2b9fec00ff6ea950fad8;hb=ac89bfd229b952e487722ed10d40965933f7cd38;hp=7eea18c8372ee34b5a2b1bcf2744672ad2b1a6a7;hpb=e194df1fb31ca84527f88717e0b857d263db3aad;p=ardour.git diff --git a/libs/gtkmm2ext/pixfader.cc b/libs/gtkmm2ext/pixfader.cc index 7eea18c837..23510e824e 100644 --- a/libs/gtkmm2ext/pixfader.cc +++ b/libs/gtkmm2ext/pixfader.cc @@ -1,5 +1,5 @@ /* - Copyright (C) 2006 Paul Davis + Copyright (C) 2006 Paul Davis This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -20,61 +20,96 @@ #include -#include "gtkmm2ext/pixfader.h" +#include + +#include "pbd/stacktrace.h" + +#include "gtkmm2ext/cairo_widget.h" #include "gtkmm2ext/keyboard.h" -#include "gtkmm2ext/rgb_macros.h" +#include "gtkmm2ext/pixfader.h" #include "gtkmm2ext/utils.h" using namespace Gtkmm2ext; using namespace Gtk; using namespace std; -#define CORNER_RADIUS 4 -#define FADER_RESERVE (2*CORNER_RADIUS) +#define CORNER_RADIUS 2.5 +#define CORNER_SIZE 2 +#define CORNER_OFFSET 1 +#define FADER_RESERVE 6 + +std::list PixFader::_patterns; PixFader::PixFader (Gtk::Adjustment& adj, int orientation, int fader_length, int fader_girth) - : adjustment (adj) - , span (fader_length) - , girth (fader_girth) + : _layout (0) + , _tweaks (Tweaks(0)) + , _adjustment (adj) + , _text_width (0) + , _text_height (0) + , _span (fader_length) + , _girth (fader_girth) + , _min_span (fader_length) + , _min_girth (fader_girth) , _orien (orientation) - , pattern (0) - , texture_pattern (0) + , _pattern (0) , _hovering (false) - , last_drawn (-1) - , dragging (false) + , _dragging (false) + , _centered_text (true) + , _current_parent (0) { - default_value = adjustment.get_value(); + _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|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)); + 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)); + signal_grab_broken_event ().connect (mem_fun (*this, &PixFader::on_grab_broken_event)); + if (_orien == VERT) { + CairoWidget::set_size_request(_girth, _span); + } else { + CairoWidget::set_size_request(_span, _girth); + } } PixFader::~PixFader () { - free_patterns (); + if (_parent_style_change) _parent_style_change.disconnect(); + if (_layout) _layout.clear (); // drop reference to existing layout } void -PixFader::free_patterns () -{ - if (pattern) { - cairo_pattern_destroy (pattern); - pattern = 0; +PixFader::flush_pattern_cache () { + for (list::iterator f = _patterns.begin(); f != _patterns.end(); ++f) { + cairo_pattern_destroy ((*f)->pattern); } - if (texture_pattern) { - cairo_pattern_destroy (texture_pattern); - texture_pattern = 0; + _patterns.clear(); +} + + +cairo_pattern_t* +PixFader::find_pattern (double afr, double afg, double afb, + double abr, double abg, double abb, + int w, int h) +{ + for (list::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; @@ -91,40 +126,46 @@ PixFader::create_patterns () cairo_surface_t* surface; cairo_t* tc = 0; - float radius = CORNER_RADIUS; - double w = get_width(); + if (get_width() <= 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) { - 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_pattern_add_color_stop_rgba (shade_pattern, 0, br*0.4,bg*0.4,bb*0.4, 1.0); + cairo_pattern_add_color_stop_rgba (shade_pattern, 0.25, br*0.6,bg*0.6,bb*0.6, 1.0); + cairo_pattern_add_color_stop_rgba (shade_pattern, 1, br*0.8,bg*0.8,bb*0.8, 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); + shade_pattern = cairo_pattern_create_linear (0.0, 0.0, get_width() - 2 - CORNER_OFFSET , 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); + Gtkmm2ext::rounded_top_half_rectangle (tc, CORNER_OFFSET, get_height() + CORNER_OFFSET, + get_width() - CORNER_SIZE, get_height(), CORNER_RADIUS); cairo_fill (tc); cairo_pattern_destroy (shade_pattern); - pattern = cairo_pattern_create_for_surface (surface); + _pattern = cairo_pattern_create_for_surface (surface); } else { @@ -134,71 +175,93 @@ PixFader::create_patterns () /* 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_pattern_add_color_stop_rgba (shade_pattern, 0, br*0.4,bg*0.4,bb*0.4, 1.0); + cairo_pattern_add_color_stop_rgba (shade_pattern, 0.25, br*0.6,bg*0.6,bb*0.6, 1.0); + cairo_pattern_add_color_stop_rgba (shade_pattern, 1, br*0.8,bg*0.8,bb*0.8, 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); + Gtkmm2ext::rounded_right_half_rectangle (tc, CORNER_OFFSET, CORNER_OFFSET, + get_width() - CORNER_OFFSET, get_height() - CORNER_SIZE, CORNER_RADIUS); cairo_fill (tc); cairo_pattern_destroy (shade_pattern); - - pattern = cairo_pattern_create_for_surface (surface); - } - - cairo_destroy (tc); - cairo_surface_destroy (surface); - if ( !_text.empty()) { - _layout->get_pixel_size (_text_width, _text_height); - } else { - _text_width = 0; - _text_height = 0; + _pattern = cairo_pattern_create_for_surface (surface); } - c = get_style()->get_text (get_state()); + /* cache it for others to use */ + + _patterns.push_back (new FaderImage (_pattern, fr, fg, fb, br, bg, bb, get_width(), get_height())); - 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 -PixFader::on_expose_event (GdkEventExpose* ev) +void +PixFader::render (Cairo::RefPtr const& ctx, cairo_rectangle_t* area) { - Cairo::RefPtr context = get_window()->create_cairo_context(); - cairo_t* cr = context->cobj(); + cairo_t* cr = ctx->cobj(); - cairo_rectangle (cr, ev->area.x, ev->area.y, ev->area.width, ev->area.height); - cairo_clip (cr); - - if (!pattern) { + 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. + */ + + CairoWidget::set_source_rgb_a (cr, get_style()->get_bg (get_state()), 1); + cairo_rectangle (cr, area->x, area->y, area->width, area->height); + cairo_fill (cr); + return; + } + + OnExpose(); int ds = display_span (); - float w = get_width(); - float h = get_height(); + const float w = get_width(); + const float h = get_height(); + + CairoWidget::set_source_rgb_a (cr, get_parent_bg(), 1); + cairo_rectangle (cr, 0, 0, w, h); + cairo_fill(cr); + + cairo_set_line_width (cr, 2); + cairo_set_source_rgba (cr, 0, 0, 0, 1.0); cairo_matrix_t matrix; + Gtkmm2ext::rounded_rectangle (cr, CORNER_OFFSET, CORNER_OFFSET, w-CORNER_SIZE, h-CORNER_SIZE, CORNER_RADIUS); + // we use a 'trick' here: The stoke is off by .5px but filling the interior area + // after a stroke of 2px width results in an outline of 1px + cairo_stroke_preserve(cr); if (_orien == VERT) { - if (ds > h - FADER_RESERVE) { - ds = h - FADER_RESERVE; + if (ds > h - FADER_RESERVE - CORNER_OFFSET) { + ds = h - FADER_RESERVE - CORNER_OFFSET; } - 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); + if (!CairoWidget::flat_buttons() ) { + cairo_set_source (cr, _pattern); + cairo_matrix_init_translate (&matrix, 0, (h - ds)); + cairo_pattern_set_matrix (_pattern, &matrix); + } else { + CairoWidget::set_source_rgb_a (cr, get_style()->get_bg (get_state()), 1); + cairo_fill (cr); + CairoWidget::set_source_rgb_a (cr, get_style()->get_fg (get_state()), 1); + Gtkmm2ext::rounded_rectangle (cr, CORNER_OFFSET, ds + CORNER_OFFSET, + w - CORNER_SIZE, h - ds - CORNER_SIZE, CORNER_RADIUS); + } cairo_fill (cr); } else { @@ -206,109 +269,139 @@ PixFader::on_expose_event (GdkEventExpose* ev) if (ds < FADER_RESERVE) { ds = FADER_RESERVE; } + assert(ds <= w); /* - 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) + * 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); + if (!CairoWidget::flat_buttons() ) { + cairo_set_source (cr, _pattern); + cairo_matrix_init_translate (&matrix, w - ds, 0); + cairo_pattern_set_matrix (_pattern, &matrix); + } else { + CairoWidget::set_source_rgb_a (cr, get_style()->get_bg (get_state()), 1); + cairo_fill (cr); + CairoWidget::set_source_rgb_a (cr, get_style()->get_fg (get_state()), 1); + Gtkmm2ext::rounded_rectangle (cr, CORNER_OFFSET, CORNER_OFFSET, + ds - CORNER_SIZE, h - CORNER_SIZE, CORNER_RADIUS); + } 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 (); + if (!(_tweaks & NoShowUnityLine) && _unity_loc > CORNER_RADIUS) { + cairo_set_line_width(cr, 1); + cairo_set_line_cap(cr, CAIRO_LINE_CAP_ROUND); + Gdk::Color c = get_style()->get_fg (Gtk::STATE_ACTIVE); + cairo_set_source_rgba (cr, 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 - CORNER_RADIUS) { + cairo_move_to (cr, 1.5, _unity_loc + CORNER_OFFSET + .5); + cairo_line_to (cr, _girth - 1.5, _unity_loc + CORNER_OFFSET + .5); + cairo_stroke (cr); } } 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 (_unity_loc < w - CORNER_RADIUS) { + cairo_move_to (cr, _unity_loc - CORNER_OFFSET + .5, 1.5); + cairo_line_to (cr, _unity_loc - CORNER_OFFSET + .5, _girth - 1.5); + cairo_stroke (cr); } } } - - if ( !_text.empty() ) { - - cairo_new_path (cr); - /* center text */ - 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); + if (_layout && !_text.empty() && _orien == HORIZ) { + cairo_save (cr); + if (_centered_text) { + /* center text */ + cairo_move_to (cr, (w - _text_width)/2.0, h/2.0 - _text_height/2.0); + } else if (ds > .5 * w) { + cairo_move_to (cr, CORNER_OFFSET + 3, h/2.0 - _text_height/2.0); + cairo_set_operator(cr, CAIRO_OPERATOR_XOR); + } else { + cairo_move_to (cr, w - _text_width - CORNER_OFFSET - 3, h/2.0 - _text_height/2.0); } -// } - - last_drawn = ds; + CairoWidget::set_source_rgb_a (cr, get_style()->get_text (get_state()), 1); + pango_cairo_show_layout (cr, _layout->gobj()); + cairo_restore (cr); + } - return true; + if (!get_sensitive()) { + Gtkmm2ext::rounded_rectangle (cr, CORNER_OFFSET, CORNER_OFFSET, w-CORNER_SIZE, h-CORNER_SIZE, CORNER_RADIUS); + cairo_set_source_rgba (cr, 0.505, 0.517, 0.525, 0.4); + cairo_fill (cr); + } else if (_hovering && CairoWidget::widget_prelight()) { + Gtkmm2ext::rounded_rectangle (cr, CORNER_OFFSET, CORNER_OFFSET, w-CORNER_SIZE, h-CORNER_SIZE, CORNER_RADIUS); + cairo_set_source_rgba (cr, 0.905, 0.917, 0.925, 0.1); + cairo_fill (cr); + } } void PixFader::on_size_request (GtkRequisition* req) { if (_orien == VERT) { - req->width = girth; - req->height = span; + req->width = (_min_girth ? _min_girth : -1); + req->height = (_min_span ? _min_span : -1); } else { - req->height = girth; - req->width = span; + req->height = (_min_girth ? _min_girth : -1); + req->width = (_min_span ? _min_span : -1); } } void PixFader::on_size_allocate (Gtk::Allocation& alloc) { - DrawingArea::on_size_allocate(alloc); + int old_girth = _girth; + int old_span = _span; + + CairoWidget::on_size_allocate(alloc); if (_orien == VERT) { - span = alloc.get_height(); - girth = alloc.get_width (); + _girth = alloc.get_width (); + _span = alloc.get_height (); } else { - span = alloc.get_width(); - girth = alloc.get_height (); + _girth = alloc.get_height (); + _span = alloc.get_width (); + } + + if (is_realized() && ((old_girth != _girth) || (old_span != _span))) { + /* recreate patterns in case we've changed size */ + create_patterns (); } update_unity_position (); +} - if (is_realized()) { - create_patterns(); - queue_draw (); +bool +PixFader::on_grab_broken_event (GdkEventGrabBroken* ev) +{ + if (_dragging) { + remove_modal_grab(); + _dragging = false; + gdk_pointer_ungrab (GDK_CURRENT_TIME); + StopGesture (); } + return (_tweaks & NoButtonForward) ? true : false; } bool PixFader::on_button_press_event (GdkEventButton* ev) { if (ev->type != GDK_BUTTON_PRESS) { - return true; + if (_dragging) { + remove_modal_grab(); + _dragging = false; + gdk_pointer_ungrab (GDK_CURRENT_TIME); + StopGesture (); + } + return (_tweaks & NoButtonForward) ? true : false; } if (ev->button != 1 && ev->button != 2) { @@ -316,10 +409,11 @@ PixFader::on_button_press_event (GdkEventButton* ev) } 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; + StartGesture (); + _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); @@ -327,59 +421,67 @@ PixFader::on_button_press_event (GdkEventButton* ev) if (ev->button == 2) { set_adjustment_from_event (ev); } - - return true; + + return (_tweaks & NoButtonForward) ? true : false; } bool PixFader::on_button_release_event (GdkEventButton* ev) { - double const ev_pos = (_orien == VERT) ? ev->y : ev->x; - + double ev_pos = (_orien == VERT) ? ev->y : ev->x; + switch (ev->button) { case 1: - if (dragging) { + if (_dragging) { remove_modal_grab(); - dragging = false; + _dragging = false; gdk_pointer_ungrab (GDK_CURRENT_TIME); + StopGesture (); if (!_hovering) { - Keyboard::magic_widget_drop_focus(); + if (!(_tweaks & NoVerticalScroll)) { + Keyboard::magic_widget_drop_focus(); + } queue_draw (); } - if (ev_pos == grab_start) { - + if (ev_pos == _grab_start) { /* no motion - just a click */ + ev_pos = rint(ev_pos); if (ev->state & Keyboard::TertiaryModifier) { - adjustment.set_value (default_value); + _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())) { + _adjustment.set_value (_adjustment.get_lower()); +#if 0 // ignore clicks + } else if (ev_pos == slider_pos) { + ; // click on current position, no move. + } else if ((_orien == VERT && ev_pos < slider_pos) || (_orien == HORIZ && ev_pos > slider_pos)) { /* above the current display height, remember X Window coords */ - adjustment.set_value (adjustment.get_value() + adjustment.get_step_increment()); + _adjustment.set_value (_adjustment.get_value() + _adjustment.get_step_increment()); } else { - adjustment.set_value (adjustment.get_value() - adjustment.get_step_increment()); + _adjustment.set_value (_adjustment.get_value() - _adjustment.get_step_increment()); +#endif } } - - } + return true; + } break; - + case 2: - if (dragging) { + if (_dragging) { remove_modal_grab(); - dragging = false; + _dragging = false; + StopGesture (); set_adjustment_from_event (ev); gdk_pointer_ungrab (GDK_CURRENT_TIME); + return true; } break; default: break; } - return false; } @@ -391,51 +493,46 @@ PixFader::on_scroll_event (GdkEventScroll* ev) if (ev->state & Keyboard::GainFineScaleModifier) { if (ev->state & Keyboard::GainExtraFineScaleModifier) { - scale = 0.01; + scale = 0.005; } else { - scale = 0.05; + scale = 0.1; } } else { - scale = 0.25; + scale = 1.0; } if (_orien == VERT) { - - /* 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; + 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 { + int dir = ev->direction; - /* up/down scrolls should definitely affect horizontal faders - because they are so much easier to use - */ - - switch (ev->direction) { + if (ev->state & Keyboard::ScrollHorizontalModifier || !(_tweaks & NoVerticalScroll)) { + if (ev->direction == GDK_SCROLL_UP) dir = GDK_SCROLL_RIGHT; + if (ev->direction == GDK_SCROLL_DOWN) dir = GDK_SCROLL_LEFT; + } - 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; + switch (dir) { + case GDK_SCROLL_RIGHT: + _adjustment.set_value (_adjustment.get_value() + (_adjustment.get_page_increment() * scale)); + ret = true; + break; + case GDK_SCROLL_LEFT: + _adjustment.set_value (_adjustment.get_value() - (_adjustment.get_page_increment() * scale)); + ret = true; + break; + default: + break; } } return ret; @@ -444,39 +541,41 @@ PixFader::on_scroll_event (GdkEventScroll* ev) bool PixFader::on_motion_notify_event (GdkEventMotion* ev) { - if (dragging) { + if (_dragging) { double scale = 1.0; double const ev_pos = (_orien == VERT) ? ev->y : ev->x; - - if (ev->window != grab_window) { - grab_loc = ev_pos; - grab_window = ev->window; + + if (ev->window != _grab_window) { + _grab_loc = ev_pos; + _grab_window = ev->window; return true; } - + if (ev->state & Keyboard::GainFineScaleModifier) { if (ev->state & Keyboard::GainExtraFineScaleModifier) { - scale = 0.05; + scale = 0.005; } else { scale = 0.1; } } - double const delta = ev_pos - grab_loc; - grab_loc = ev_pos; + double const delta = ev_pos - _grab_loc; + _grab_loc = ev_pos; + const double off = FADER_RESERVE + ((_orien == VERT) ? CORNER_OFFSET : 0); + const double span = _span - off; double fract = (delta / span); fract = min (1.0, fract); fract = max (-1.0, fract); // X Window is top->bottom for 0..Y - + if (_orien == VERT) { fract = -fract; } - adjustment.set_value (adjustment.get_value() + scale * fract * (adjustment.get_upper() - adjustment.get_lower())); + _adjustment.set_value (_adjustment.get_value() + scale * fract * (_adjustment.get_upper() - _adjustment.get_lower())); } return true; @@ -485,41 +584,37 @@ PixFader::on_motion_notify_event (GdkEventMotion* ev) void PixFader::adjustment_changed () { - if (display_span() != last_drawn) { - queue_draw (); - } + queue_draw (); } /** @return pixel offset of the current value from the right or bottom of the fader */ int PixFader::display_span () { - float fract = (adjustment.get_value () - adjustment.get_lower()) / ((adjustment.get_upper() - adjustment.get_lower())); + 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)); + const double off = FADER_RESERVE + CORNER_OFFSET; + const double span = _span - off; + ds = (int)rint (span * (1.0 - fract)); } else { - ds = (int)floor (span * fract); + const double off = FADER_RESERVE; + const double span = _span - off; + ds = (int)rint (span * fract + off); } - - return ds; -} -void -PixFader::set_fader_length (int l) -{ - span = l; - update_unity_position (); - queue_draw (); + 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; + const double span = _span - FADER_RESERVE - CORNER_OFFSET; + _unity_loc = (int) rint (span * (1 - ((_default_value - _adjustment.get_lower()) / (_adjustment.get_upper() - _adjustment.get_lower())))) - 1; } else { - unity_loc = (int) rint (default_value * span / (adjustment.get_upper() - adjustment.get_lower())); + const double span = _span - FADER_RESERVE; + _unity_loc = (int) rint (FADER_RESERVE + (_default_value - _adjustment.get_lower()) * span / (_adjustment.get_upper() - _adjustment.get_lower())); } queue_draw (); @@ -529,7 +624,9 @@ bool PixFader::on_enter_notify_event (GdkEventCrossing*) { _hovering = true; - Keyboard::magic_widget_grab_focus (); + if (!(_tweaks & NoVerticalScroll)) { + Keyboard::magic_widget_grab_focus (); + } queue_draw (); return false; } @@ -537,9 +634,11 @@ PixFader::on_enter_notify_event (GdkEventCrossing*) bool PixFader::on_leave_notify_event (GdkEventCrossing*) { - if (!dragging) { + if (!_dragging) { _hovering = false; - Keyboard::magic_widget_drop_focus(); + if (!(_tweaks & NoVerticalScroll)) { + Keyboard::magic_widget_drop_focus(); + } queue_draw (); } return false; @@ -548,35 +647,54 @@ PixFader::on_leave_notify_event (GdkEventCrossing*) void PixFader::set_adjustment_from_event (GdkEventButton* ev) { - double fract = (_orien == VERT) ? (1.0 - (ev->y / span)) : (ev->x / span); + const double off = FADER_RESERVE + ((_orien == VERT) ? CORNER_OFFSET : 0); + const double span = _span - off; + double fract = (_orien == VERT) ? (1.0 - ((ev->y - off) / span)) : ((ev->x - off) / span); fract = min (1.0, fract); fract = max (0.0, fract); - adjustment.set_value (fract * (adjustment.get_upper () - adjustment.get_lower ())); + _adjustment.set_value (fract * (_adjustment.get_upper () - _adjustment.get_lower ())); } void PixFader::set_default_value (float d) { - default_value = d; + _default_value = d; update_unity_position (); } void -PixFader::set_text (const std::string& str) +PixFader::set_tweaks (Tweaks t) { - _text = str; + bool need_redraw = false; + if ((_tweaks & NoShowUnityLine) ^ (t & NoShowUnityLine)) { + need_redraw = true; + } + _tweaks = t; + if (need_redraw) { + queue_draw(); + } +} - if (!_layout && !_text.empty()) { +void +PixFader::set_text (const std::string& str, bool centered, bool expose) +{ + if (_layout && _text == str) { + return; + } + if (!_layout && !str.empty()) { _layout = Pango::Layout::create (get_pango_context()); - } + } + _text = str; + _centered_text = centered; if (_layout) { _layout->set_text (str); + _layout->get_pixel_size (_text_width, _text_height); + // queue_resize (); + if (expose) queue_draw (); } - - queue_resize (); } void @@ -584,4 +702,44 @@ PixFader::on_state_changed (Gtk::StateType old_state) { Widget::on_state_changed (old_state); create_patterns (); + queue_draw (); +} + +void +PixFader::on_style_changed (const Glib::RefPtr&) +{ + if (_layout) { + std::string txt = _layout->get_text(); + _layout.clear (); // drop reference to existing layout + _text = ""; + set_text (txt, _centered_text, false); + } + /* patterns are cached and re-created as needed + * during 'expose' in the GUI thread */ + _pattern = 0; + queue_draw (); +} + +Gdk::Color +PixFader::get_parent_bg () +{ + Widget* parent = get_parent (); + + while (parent) { + if (parent->get_has_window()) { + break; + } + parent = parent->get_parent(); + } + + if (parent && parent->get_has_window()) { + if (_current_parent != parent) { + if (_parent_style_change) _parent_style_change.disconnect(); + _current_parent = parent; + _parent_style_change = parent->signal_style_changed().connect (mem_fun (*this, &PixFader::on_style_changed)); + } + return parent->get_style ()->get_bg (parent->get_state()); + } + + return get_style ()->get_bg (get_state()); }