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cairo-ify the PianoKeyboard widget

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git-svn-id: svn://localhost/ardour2/branches/3.0@7531 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Paul Davis 2010-08-03 15:06:55 +00:00
parent 64f9fac9a8
commit bd69ec8b25
2 changed files with 84 additions and 48 deletions
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127
gtk2_ardour/gtk_pianokeyboard.c
View File

@ -35,6 +35,7 @@
#include <string.h>
#include <strings.h>
#include <stdint.h>
#include <cairo/cairo.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
@ -52,71 +53,84 @@ enum {
static guint piano_keyboard_signals[LAST_SIGNAL] = { 0 };
static void
draw_keyboard_cue(PianoKeyboard *pk)
draw_keyboard_cue(PianoKeyboard *pk, cairo_t* cr)
{
int w = pk->notes[0].w;
int h = pk->notes[0].h;
GdkGC *gc = GTK_WIDGET(pk)->style->fg_gc[0];
int first_note_in_lower_row = (pk->octave + 5) * 12;
int last_note_in_lower_row = (pk->octave + 6) * 12 - 1;
int first_note_in_higher_row = (pk->octave + 6) * 12;
int last_note_in_higher_row = (pk->octave + 7) * 12 + 4;
gdk_draw_line(GTK_WIDGET(pk)->window, gc, pk->notes[first_note_in_lower_row].x + 3,
h - 6, pk->notes[last_note_in_lower_row].x + w - 3, h - 6);
cairo_set_source_rgb (cr, 1.0f, 0.0f, 0.0f);
cairo_move_to (cr, pk->notes[first_note_in_lower_row].x + 3, h - 6);
cairo_line_to (cr, pk->notes[last_note_in_lower_row].x + w - 3, h - 6);
cairo_stroke (cr);
gdk_draw_line(GTK_WIDGET(pk)->window, gc, pk->notes[first_note_in_higher_row].x + 3,
h - 9, pk->notes[last_note_in_higher_row].x + w - 3, h - 9);
cairo_set_source_rgb (cr, 0.0f, 0.0f, 1.0f);
cairo_move_to (cr, pk->notes[first_note_in_higher_row].x + 3, h - 9);
cairo_line_to (cr, pk->notes[last_note_in_higher_row].x + w - 3, h - 9);
cairo_stroke (cr);
}
static void
queue_note_draw (PianoKeyboard* pk, int note)
{
GdkWindow* w = GTK_WIDGET(pk)->window;
if (w) {
GdkRectangle r;
r.x = pk->notes[note].x;
r.y = 0;
r.width = pk->notes[note].w;
r.height = pk->notes[note].h;
gdk_window_invalidate_rect (w, &r, TRUE);
}
}
static void
draw_note(PianoKeyboard *pk, int note)
draw_note(PianoKeyboard *pk, cairo_t* cr, int note)
{
GdkColor black = {0, 0, 0, 0};
GdkColor white = {0, 65535, 65535, 65535};
GdkGC *gc = GTK_WIDGET(pk)->style->fg_gc[0];
GtkWidget *widget;
int is_white = pk->notes[note].white;
int x = pk->notes[note].x;
int w = pk->notes[note].w;
int h = pk->notes[note].h;
if (pk->notes[note].pressed || pk->notes[note].sustained)
if (pk->notes[note].pressed || pk->notes[note].sustained) {
is_white = !is_white;
}
if (is_white)
gdk_gc_set_rgb_fg_color(gc, &white);
else
gdk_gc_set_rgb_fg_color(gc, &black);
cairo_set_line_width (cr, 1.0);
gdk_draw_rectangle(GTK_WIDGET(pk)->window, gc, TRUE, x, 0, w, h);
gdk_gc_set_rgb_fg_color(gc, &black);
gdk_draw_rectangle(GTK_WIDGET(pk)->window, gc, FALSE, x, 0, w, h);
if (is_white) {
cairo_set_source_rgb (cr, 1.0f, 1.0f, 1.0f);
} else {
cairo_set_source_rgb (cr, 0.0f, 0.0f, 0.0f);
}
if (pk->enable_keyboard_cue)
draw_keyboard_cue(pk);
cairo_rectangle (cr, x, 0, w, h);
cairo_fill (cr);
cairo_set_source_rgb(cr, 0.0f, 0.0f, 0.0f); /* black outline */
cairo_rectangle (cr, x, 0, w, h);
cairo_stroke (cr);
if (pk->enable_keyboard_cue) {
draw_keyboard_cue (pk, cr);
}
/* We need to redraw black keys that partially obscure the white one. */
if (note < NNOTES - 2 && !pk->notes[note + 1].white)
draw_note(pk, note + 1);
if (note < NNOTES - 2 && !pk->notes[note + 1].white) {
draw_note(pk, cr, note + 1);
}
if (note > 0 && !pk->notes[note - 1].white)
draw_note(pk, note - 1);
/*
* XXX: This doesn't really belong here. Originally I wanted to pack PianoKeyboard into GtkFrame
* packed into GtkAlignment. I failed to make it behave the way I want. GtkFrame would need
* to adapt to the "proper" size of PianoKeyboard, i.e. to the useful_width, not allocated width;
* that didn't work.
*/
widget = GTK_WIDGET(pk);
gtk_paint_shadow(widget->style, widget->window, GTK_STATE_NORMAL, GTK_SHADOW_IN, NULL, widget, NULL, pk->widget_margin, 0,
widget->allocation.width - pk->widget_margin * 2 + 1, widget->allocation.height);
if (note > 0 && !pk->notes[note - 1].white) {
draw_note(pk, cr, note - 1);
}
}
static int
@ -139,7 +153,7 @@ press_key(PianoKeyboard *pk, int key)
pk->notes[key].pressed = 1;
g_signal_emit_by_name(GTK_WIDGET(pk), "note-on", key);
draw_note(pk, key);
queue_note_draw(pk, key);
return 1;
}
@ -164,7 +178,7 @@ release_key(PianoKeyboard *pk, int key)
return 0;
g_signal_emit_by_name(GTK_WIDGET(pk), "note-off", key);
draw_note(pk, key);
queue_note_draw(pk, key);
return 1;
}
@ -178,7 +192,7 @@ stop_unsustained_notes(PianoKeyboard *pk)
if (pk->notes[i].pressed && !pk->notes[i].sustained) {
pk->notes[i].pressed = 0;
g_signal_emit_by_name(GTK_WIDGET(pk), "note-off", i);
draw_note(pk, i);
queue_note_draw(pk, i);
}
}
}
@ -193,7 +207,7 @@ stop_sustained_notes(PianoKeyboard *pk)
pk->notes[i].pressed = 0;
pk->notes[i].sustained = 0;
g_signal_emit_by_name(GTK_WIDGET(pk), "note-off", i);
draw_note(pk, i);
queue_note_draw(pk, i);
}
}
}
@ -461,9 +475,30 @@ piano_keyboard_expose(GtkWidget *widget, GdkEventExpose *event)
{
int i;
PianoKeyboard *pk = PIANO_KEYBOARD(widget);
cairo_t* cr = gdk_cairo_create (GDK_DRAWABLE (GTK_WIDGET(pk)->window));
gdk_cairo_region (cr, event->region);
cairo_clip (cr);
for (i = 0; i < NNOTES; i++)
draw_note(pk, i);
for (i = 0; i < NNOTES; i++) {
GdkRectangle r;
r.x = pk->notes[i].x;
r.y = 0;
r.width = pk->notes[i].w;
r.height = pk->notes[i].h;
switch (gdk_region_rect_in (event->region, &r)) {
case GDK_OVERLAP_RECTANGLE_PART:
case GDK_OVERLAP_RECTANGLE_IN:
draw_note (pk, cr, i);
break;
default:
break;
}
}
cairo_destroy (cr);
return TRUE;
}
@ -642,7 +677,7 @@ piano_keyboard_set_note_on(PianoKeyboard *pk, int note)
{
if (pk->notes[note].pressed == 0) {
pk->notes[note].pressed = 1;
draw_note(pk, note);
queue_note_draw (pk, note);
}
}
@ -652,7 +687,7 @@ piano_keyboard_set_note_off(PianoKeyboard *pk, int note)
if (pk->notes[note].pressed || pk->notes[note].sustained) {
pk->notes[note].pressed = 0;
pk->notes[note].sustained = 0;
draw_note(pk, note);
queue_note_draw (pk, note);
}
}

5
gtk2_ardour/step_entry.cc
View File

@ -167,9 +167,10 @@ StepEntry::StepEntry (MidiTimeAxisView& mtv)
_piano = (PianoKeyboard*) piano_keyboard_new ();
piano = Glib::wrap ((GtkWidget*) _piano);
piano_keyboard_set_keyboard_cue (PIANO_KEYBOARD(_piano), 1);
g_signal_connect(G_OBJECT(_piano), "note-off", G_CALLBACK(_note_off_event_handler), this);
g_signal_connect(G_OBJECT(_piano), "note-off", G_CALLBACK(_note_off_event_handler), this);
rest_button.signal_clicked().connect (sigc::mem_fun (*this, &StepEntry::rest_click));
chord_button.signal_toggled().connect (sigc::mem_fun (*this, &StepEntry::chord_toggled));
triplet_button.signal_toggled().connect (sigc::mem_fun (*this, &StepEntry::triplet_toggled));