X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fgtkmm2ext%2Fpixfader.cc;h=02597f331eca14297b342635f8d3d935b2f7b349;hb=9a0b1cce075f32768197d001f269a191869cc4e6;hp=f0ba652052f7dd37d484f9289cb93eaa16a52116;hpb=716ec148f665e407b9ad7eee8f6e8218bf783d0d;p=ardour.git diff --git a/libs/gtkmm2ext/pixfader.cc b/libs/gtkmm2ext/pixfader.cc index f0ba652052..02597f331e 100644 --- a/libs/gtkmm2ext/pixfader.cc +++ b/libs/gtkmm2ext/pixfader.cc @@ -20,59 +20,165 @@ #include -#include +#include "gtkmm2ext/pixfader.h" +#include "gtkmm2ext/keyboard.h" +#include "gtkmm2ext/rgb_macros.h" using namespace Gtkmm2ext; using namespace Gtk; -using namespace Gdk; using namespace std; -PixFader::PixFader (Glib::RefPtr belt, Gtk::Adjustment& adj) +PixFader::PixFader ( + Glib::RefPtr belt, + Glib::RefPtr belt_desensitised, + Gtk::Adjustment& adj, + int orientation, + int fader_length + ) : adjustment (adj), - pixbuf (belt) + _orien(orientation) { + pixbuf[NORMAL] = belt; + pixbuf[DESENSITISED] = belt_desensitised; + dragging = false; default_value = adjustment.get_value(); last_drawn = -1; - pixheight = pixbuf->get_height(); view.x = 0; view.y = 0; - view.width = pixbuf->get_width(); - view.height = pixheight / 2; - unity_y = (int) rint (view.height - (default_value * view.height)) - 1; + if (orientation == VERT) { + view.width = girth = pixbuf[0]->get_width(); + } else { + view.height = girth = pixbuf[0]->get_height(); + } + + set_fader_length (fader_length); - 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)); + + for (int i = 0; i < STATES; ++i) { + Cairo::Format format; + + if (pixbuf[i]->get_has_alpha()) { + format = Cairo::FORMAT_ARGB32; + } else { + format = Cairo::FORMAT_RGB24; + } + + belt_surface[i] = Cairo::ImageSurface::create (format, pixbuf[i]->get_width(), pixbuf[i]->get_height()); + belt_context[i] = Cairo::Context::create (belt_surface[i]); + Gdk::Cairo::set_source_pixbuf (belt_context[i], pixbuf[i], 0.0, 0.0); + belt_context[i]->paint(); + } + + left_r = 0; + left_g = 0; + left_b = 0; + + right_r = 0; + right_g = 0; + right_b = 0; } PixFader::~PixFader () { } +void +PixFader::set_border_colors (uint32_t left, uint32_t right) +{ + 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; +} + 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); + int const pi = get_sensitive() ? NORMAL : DESENSITISED; + + Cairo::RefPtr context = get_window()->create_cairo_context(); + int srcx, srcy; + int const ds = display_span (); + int offset_into_pixbuf = (int) floor (span / ((float) span / ds)); + + /* account for fader lengths that are shorter than the fader pixbuf */ + if (_orien == VERT) { + offset_into_pixbuf += pixbuf[pi]->get_height() / 2 - view.height; + } else { + offset_into_pixbuf += pixbuf[pi]->get_width() / 2 - view.width; } - /* always draw the line */ + 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[pi], -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 (_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 (); + } 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 (); + } - get_window()->draw_line (get_style()->get_fg_gc(get_state()), 0, unity_y, view.width - 2, unity_y); + last_drawn = ds; - last_drawn = dh; return true; } @@ -86,51 +192,47 @@ PixFader::on_size_request (GtkRequisition* req) 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; + + 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; - if (ev->y == grab_start) { + if (ev_pos == 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 < span - display_span()) || (_orien == HORIZ && ev_pos > span - display_span())) { /* above the current display height, remember X Window coords */ adjustment.set_value (adjustment.get_value() + adjustment.get_step_increment()); } else { @@ -138,25 +240,14 @@ PixFader::on_button_release_event (GdkEventButton* ev) } } - } else { - - if (ev->state & Gdk::SHIFT_MASK) { - adjustment.set_value (default_value); - } - } + } 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); } break; @@ -171,68 +262,94 @@ bool 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())); } @@ -243,14 +360,73 @@ PixFader::on_motion_notify_event (GdkEventMotion* ev) 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_value () - adjustment.get_lower()) / ((adjustment.get_upper() - adjustment.get_lower())); + return (_orien != VERT) ? (int)floor (span * (1.0 - fract)) : (int)floor (span * fract); +} + +void +PixFader::set_fader_length (int l) +{ + if (_orien == VERT) { + view.height = span = l; + } else { + view.width = span = l; + } + + update_unity_position (); + + queue_draw (); +} + +void +PixFader::update_unity_position () +{ + if (_orien == VERT) { + unity_loc = (int) rint (view.height * (1 - (default_value / (adjustment.get_upper() - adjustment.get_lower())))) - 1; + } else { + unity_loc = (int) rint (default_value * view.width); + } + + queue_draw (); +} + +bool +PixFader::on_enter_notify_event (GdkEventCrossing*) +{ + Keyboard::magic_widget_grab_focus (); + return false; +} + +bool +PixFader::on_leave_notify_event (GdkEventCrossing*) +{ + Keyboard::magic_widget_drop_focus(); + 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) { - float fract = (adjustment.get_upper() - adjustment.get_value ()) / ((adjustment.get_upper() - adjustment.get_lower())); - return (int) floor (view.height * (1.0 - fract)); + default_value = d; + update_unity_position (); }