From 6cd69fb20faaec7f63fdbc283884ebcb2e6867c7 Mon Sep 17 00:00:00 2001 From: Paul Davis Date: Tue, 21 Nov 2006 21:40:38 +0000 Subject: "treadmill" design for new faders, for real git-svn-id: svn://localhost/ardour2/trunk@1151 d708f5d6-7413-0410-9779-e7cbd77b26cf --- libs/gtkmm2ext/pixfader.cc | 104 ++++++++++++++++++++++----------------------- 1 file changed, 52 insertions(+), 52 deletions(-) (limited to 'libs/gtkmm2ext/pixfader.cc') diff --git a/libs/gtkmm2ext/pixfader.cc b/libs/gtkmm2ext/pixfader.cc index 429f5bf3c5..42f0567705 100644 --- a/libs/gtkmm2ext/pixfader.cc +++ b/libs/gtkmm2ext/pixfader.cc @@ -27,21 +27,21 @@ using namespace Gtk; using namespace Gdk; using namespace std; -PixFader::PixFader (Glib::RefPtr base, Glib::RefPtr handle, Gtk::Adjustment& adj) +PixFader::PixFader (Glib::RefPtr belt, Gtk::Adjustment& adj) : adjustment (adj), - base_pixbuf (base), - handle_pixbuf (handle) + pixbuf (belt) { dragging = false; default_value = adjustment.get_value(); last_drawn = -1; - pixrect.x = 0; - pixrect.y = 0; - pixrect.width = base_pixbuf->get_width(); - pixrect.height = base_pixbuf->get_height(); - pixheight = pixrect.height; + pixheight = pixbuf->get_height(); - unity_y = (int) rint (pixrect.height - (default_value * pixrect.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)); add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK|Gdk::SCROLL_MASK); @@ -57,51 +57,30 @@ bool PixFader::on_expose_event (GdkEventExpose* ev) { GdkRectangle intersection; - GdkRectangle background; - - pixrect.height = display_height (); - - background.x = 0; - background.y = 0; - background.width = pixrect.width; - background.height = pixheight - pixrect.height; - - if (gdk_rectangle_intersect (&background, &ev->area, &intersection)) { - get_window()->draw_pixbuf (get_style()->get_fg_gc (get_state()), base_pixbuf, - intersection.x, intersection.y, - 0, 0, - intersection.width, intersection.height, - Gdk::RGB_DITHER_NONE, 0, 0); - - } - - /* recompute the height of the handle area to use X Window's top->bottom coordinate - system. - */ + int dh = display_height (); + int offset_into_pixbuf = (int) floor (view.height / ((float) view.height / dh)); - pixrect.y = pixheight - pixrect.height; - - if (gdk_rectangle_intersect (&pixrect, &ev->area, &intersection)) { - get_window()->draw_pixbuf(get_style()->get_fg_gc(get_state()), handle_pixbuf, - intersection.x, intersection.y, - 0, pixrect.y, + 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, + 0, 0, intersection.width, intersection.height, Gdk::RGB_DITHER_NONE, 0, 0); } /* always draw the line */ - get_window()->draw_line (get_style()->get_fg_gc(get_state()), 0, unity_y, pixrect.width, unity_y); + get_window()->draw_line (get_style()->get_fg_gc(get_state()), 0, unity_y, view.width - 2, unity_y); - last_drawn = pixrect.height; + last_drawn = dh; return true; } void PixFader::on_size_request (GtkRequisition* req) { - req->width = base_pixbuf->get_width(); - req->height = base_pixbuf->get_height (); + req->width = view.width; + req->height = view.height; } bool @@ -109,6 +88,7 @@ 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; @@ -129,6 +109,7 @@ bool PixFader::on_button_release_event (GdkEventButton* ev) { double scale; + double fract; if (ev->state & GDK_CONTROL_MASK) { if (ev->state & GDK_MOD1_MASK) { @@ -148,29 +129,41 @@ PixFader::on_button_release_event (GdkEventButton* ev) if (ev->y == grab_start) { /* no motion - just a click */ - double fract; - - if (ev->y < (pixheight/2)) { - /* near the top */ - fract = 1.0; + + if (ev->y < view.height - display_height()) { + /* above the current display height, remember X Window coords */ + adjustment.set_value (adjustment.get_value() + adjustment.get_step_increment()); } else { - fract = 1.0 - (ev->y - pixheight); + adjustment.set_value (adjustment.get_value() - adjustment.get_step_increment()); } - - fract = min (1.0, fract); - fract = max (0.0, fract); - - adjustment.set_value (scale * fract * (adjustment.get_upper() - adjustment.get_lower())); } + } 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())); + } + break; + default: break; } + return false; } @@ -232,7 +225,7 @@ PixFader::on_motion_notify_event (GdkEventMotion* ev) delta = ev->y - grab_y; grab_y = ev->y; - fract = (delta / pixheight); + fract = (delta / view.height); fract = min (1.0, fract); fract = max (-1.0, fract); @@ -254,3 +247,10 @@ PixFader::adjustment_changed () queue_draw (); } } + +int +PixFader::display_height () +{ + float fract = (adjustment.get_upper() - adjustment.get_value ()) / ((adjustment.get_upper() - adjustment.get_lower())); + return (int) floor (view.height * (1.0 - fract)); +} -- cgit v1.2.3