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/* mousing.c
* callback functions for handling mouse clicks, drags, etc.
*
* for Denemo, a gtk+ frontend to GNU Lilypond
* (c) 2000-2005 Matthew Hiller
*/
#include "commandfuncs.h"
#include "kbd-custom.h"
#include "staffops.h"
#include "utils.h"
#include "selectops.h"
#include "lilydirectives.h"
#include "lyric.h"
#include "moveviewport.h"
#include "mousing.h"
#include "fluid.h"
static gboolean lh_down;
/**
* Get the mid_c_offset of an object or click from its height relative
* to the top of the staff.
*/
gint
offset_from_height (gdouble height, enum clefs clef)
{
/* Offset from the top of the staff, in half-tones. */
gint half_tone_offset = ((gint) (height / HALF_LINE_SPACE+((height>0)?0.5:-0.5)));
#define R(x) return x - half_tone_offset
switch (clef)
{
case DENEMO_TREBLE_CLEF:
R (10);
break;
case DENEMO_BASS_CLEF:
R (-2);
break;
case DENEMO_ALTO_CLEF:
R (4);
break;
case DENEMO_G_8_CLEF:
R (3);
break;
case DENEMO_F_8_CLEF:
R (-9);
break;
case DENEMO_TENOR_CLEF:
R (2);
break;
case DENEMO_SOPRANO_CLEF:
R (8);
break;
case DENEMO_FRENCH_CLEF:
R (12);
break;
//when adding clefs get utils.c calculateheight() function correct first, then do this
default:
R (0);
break;
}
#undef R
return 0;
}
static gdouble get_click_height(DenemoGUI * gui, gdouble y) {
gdouble click_height;
gint staffs_from_top;
staffs_from_top = 0;
GList *curstaff;
DenemoStaff *staff;
gint extra_space = 0;
gint space_below = 0;
curstaff = g_list_nth(gui->si->thescore,gui->si->top_staff-1);
if(((DenemoStaff *)(gui->si->currentstaff->data))->voicenumber != 1)
staffs_from_top--;
for( curstaff = g_list_nth(gui->si->thescore,gui->si->top_staff-1) ; curstaff;curstaff=curstaff->next) {
//g_print("before extra space %d\n", extra_space);
staff = (DenemoStaff *) curstaff->data;
if(staff->voicenumber == 1)
extra_space += (staff->space_above) + space_below;
if(curstaff == gui->si->currentstaff)
break;
if(staff->voicenumber == 1){
space_below = 0;
staffs_from_top++;
}
space_below = MAX(space_below, ((staff->space_below) + (staff->verses?LYRICS_HEIGHT:0)));
//g_print("after extra space %d space_below %d\n", extra_space, space_below);
}
click_height =
y - (gui->si->staffspace * staffs_from_top + gui->si->staffspace / 4 + extra_space);
// g_print("top staff is %d total %d staffs from top is %d click %f\n", gui->si->top_staff, extra_space, staffs_from_top, click_height);
return click_height;
}
/**
* Set the cursor's y position from a mouse click
*
*/
void
set_cursor_y_from_click (DenemoGUI * gui, gdouble y)
{
/* Click height relative to the top of the staff. */
gdouble click_height = get_click_height(gui, y);
gui->si->cursor_y =
offset_from_height (click_height, (enum clefs) gui->si->cursorclef);
gui->si->staffletter_y = offsettonumber (gui->si->cursor_y);
}
struct placement_info
{
gint staff_number, measure_number, cursor_x;
staffnode *the_staff;
measurenode *the_measure;
objnode *the_obj;
gboolean nextmeasure;
};
/* find the primary staff of the current staff, return its staffnum */
static gint primary_staff(DenemoScore *si) {
GList *curstaff;
for(curstaff = si->currentstaff; curstaff && ((DenemoStaff *) curstaff->data)->voicenumber!=1;curstaff=curstaff->prev)
;//do nothing
//g_print("The position is %d\n", 1+g_list_position(si->thescore, curstaff));
return 1+g_list_position(si->thescore, curstaff);
}
/* find which staff in si the height y lies in, return the staff number (not counting non-primary staffs ie voices) */
static gint staff_at (gint y, DenemoScore *si) {
GList *curstaff;
gint space = 0;
gint count;
gint ret;
for(curstaff = g_list_nth(si->thescore, si->top_staff-1), count=0; curstaff && y>space;curstaff=curstaff->next) {
DenemoStaff *staff = (DenemoStaff *) curstaff->data;
count++;
if(staff->voicenumber == 1)
space += (staff)->space_above +
(staff)->space_below + si->staffspace;
//g_print("y %d and space %d count = %d\n",y,space, count);
}
if(y<=1)
ret = 1;
ret = count+si->top_staff-1;
if(ret==primary_staff(si))
ret = si->currentstaffnum;
return ret>0?ret:1;
}
/**
* Gets the position from the clicked position
*
*/
static void
get_placement_from_coordinates (struct placement_info *pi,
gdouble x, gdouble y, gint leftmeasurenum, gint rightmeasurenum, gint scale )
{
DenemoScore *si = Denemo.gui->si;
GList *mwidthiterator = g_list_nth (si->measurewidths,
leftmeasurenum - 1);
objnode *obj_iterator;
gint x_to_explain = (gint) (x);
if(mwidthiterator==NULL) {
g_critical("Array of measurewidths too small for leftmeasure %d\n", leftmeasurenum);
return;
}
pi->staff_number = staff_at((gint)y, si);
//g_print("L/R %d %d got staff number %d\n", leftmeasurenum, rightmeasurenum, pi->staff_number);
pi->measure_number = leftmeasurenum;
if(scale)
x_to_explain = (x_to_explain*scale)/100;
x_to_explain -= (KEY_MARGIN + si->maxkeywidth + SPACE_FOR_TIME);
//g_print("Explaining %d\n", x_to_explain);
while (x_to_explain > GPOINTER_TO_INT (mwidthiterator->data)
&& pi->measure_number < rightmeasurenum)
{
x_to_explain -= (GPOINTER_TO_INT (mwidthiterator->data)
+ SPACE_FOR_BARLINE);
mwidthiterator = mwidthiterator->next;
pi->measure_number++;
}
//g_print("got to measure %d\n", pi->measure_number);
pi->nextmeasure = (
(si->system_height>0.5 || x_to_explain > GPOINTER_TO_INT (mwidthiterator->data))
&&
pi->measure_number >= rightmeasurenum);
pi->the_staff = g_list_nth (si->thescore, pi->staff_number - 1);
pi->the_measure
= nth_measure_node_in_staff (pi->the_staff, pi->measure_number - 1);
if (pi->the_measure != NULL){ /*check to make sure user did not click on empty space*/
obj_iterator = (objnode *) pi->the_measure->data;
pi->cursor_x = 0;
pi->the_obj = NULL;
if (obj_iterator)
{
DenemoObject *current, *next;
for (; obj_iterator->next;
obj_iterator = obj_iterator->next, pi->cursor_x++)
{
current = (DenemoObject *) obj_iterator->data;
next = (DenemoObject *) obj_iterator->next->data;
/* This comparison neatly takes care of two possibilities:
1) That the click was to the left of current, or
2) That the click was between current and next, but
closer to current.
Do the math - it really does work out. */
//???modify current->x by gx where graphic_override is set????
if (x_to_explain - (current->x + current->minpixelsalloted)
< next->x - x_to_explain)
{
pi->the_obj = obj_iterator;
break;
}
}
if (!obj_iterator->next)
/* That is, we exited the loop normally, not through a break. */
{
DenemoObject *current = (DenemoObject *) obj_iterator->data;
pi->the_obj = obj_iterator;
/* The below makes clicking to get the object at the end of
a measure (instead of appending after it) require
precision. This may be bad; tweak me if necessary. */
if (x_to_explain > current->x + current->minpixelsalloted)
pi->cursor_x++;
}
}
//g_print("got to cursor x %d\n", pi->cursor_x);
}
}
void assign_cursor(guint state, guint cursor_num) {
guint *cursor_state = g_new(guint,1);
*cursor_state = state;
//g_print("Storing cursor %x for state %x in hash table %p\n", cursor_num, state, Denemo.map->cursors );
GdkCursor *cursor = gdk_cursor_new(cursor_num);
g_assert(cursor);
g_hash_table_insert(Denemo.map->cursors, cursor_state, cursor);
}
void
set_cursor_for(guint state) {
gint the_state = state;
GdkCursor *cursor = g_hash_table_lookup(Denemo.map->cursors, &the_state);
//g_print("looked up %x in %p got cursor %p which is number %d\n", state, Denemo.map->cursors, cursor, cursor?cursor->type:-1);
if(cursor)
gdk_window_set_cursor(Denemo.window->window, cursor);
else
gdk_window_set_cursor(Denemo.window->window, gdk_cursor_new(GDK_LEFT_PTR));//FIXME? does this take time/hog memory
}
/* appends the name(s) for modifier mod to ret->str */
void append_modifier_name(GString *ret, gint mod) {
gint i;
static const gchar* names[]= {
"Shift" ,
"CapsLock" ,
"Control" ,
"Alt" ,
"NumLock" ,
"MOD3" ,
"Penguin" ,
"AltGr"
};
for(i=0;i<DENEMO_NUMBER_MODIFIERS;i++)
if((1<<i)&mod)
g_string_append_printf(ret, "%s%s", "-",names[i]);
g_string_append_printf(ret, "%s", mod?"":"");
}
/* returns a newly allocated GString containing a shortcut name */
GString* mouse_shortcut_name(gint mod, mouse_gesture gesture, gboolean left) {
GString *ret = g_string_new((gesture==GESTURE_PRESS)?(left?"PrsL":"PrsR"):((gesture==GESTURE_RELEASE)?(left?"RlsL":"RlsR"):(left?"MveL":"MveR")));
append_modifier_name(ret, mod);
//g_print("Returning %s for mod %d\n", ret->str, mod);
return ret;
}
/* perform an action for mouse-click stored with shortcuts */
static void
perform_command(gint modnum, mouse_gesture press, gboolean left)
{
GString *modname = mouse_shortcut_name(modnum, press, left);
gint command_idx = lookup_command_for_keybinding_name (Denemo.map, modname->str);
if(press != GESTURE_MOVE){
if(!Denemo.prefs.strictshortcuts){
if(command_idx<0) {
g_string_free(modname, TRUE);
modname = mouse_shortcut_name(modnum&(~GDK_LOCK_MASK/*CapsLock*/), press, left);
command_idx = lookup_command_for_keybinding_name (Denemo.map, modname->str);
}
if(command_idx<0){
g_string_free(modname, TRUE);
modname = mouse_shortcut_name(modnum&(~GDK_MOD2_MASK/*NumLock*/), press, left);
command_idx = lookup_command_for_keybinding_name (Denemo.map, modname->str);
}
if(command_idx<0){
g_string_free(modname, TRUE);
modname = mouse_shortcut_name(modnum&(~(GDK_LOCK_MASK|GDK_MOD2_MASK)), press, left);
command_idx = lookup_command_for_keybinding_name (Denemo.map, modname->str);
}
}
}
if(command_idx>=0) {
execute_callback_from_idx (Denemo.map, command_idx);
displayhelper (Denemo.gui);
}
g_string_free(modname, TRUE);
}
static gboolean selecting = FALSE;
static gboolean dragging_separator = FALSE;
static gboolean change_staff(DenemoScore *si, gint num, GList *staff) {
if(si->currentstaffnum==num)
return FALSE;
hide_lyrics();
si->currentstaffnum = num;
si->currentstaff = staff;
show_lyrics();
return TRUE;
}
static void
transform_coords(double* x, double* y) {
DenemoGUI *gui = Denemo.gui;
gint line_height = Denemo.scorearea->allocation.height*gui->si->system_height;
gint line_num = ((int)*y)/line_height;
*y -= line_num * line_height;
*x /= gui->si->zoom;
*y /= gui->si->zoom;
// *x += ((double)line_num * gui->si->widthtoworkwith / ((int)(1/gui->si->system_height))) - 1.0* (line_num?(double)LEFT_MARGIN:0.0);
}
gint
scorearea_leave_event(GtkWidget *widget, GdkEventCrossing *event) {
gdk_window_set_cursor(Denemo.window->window, gdk_cursor_new(GDK_LEFT_PTR));//FIXME? does this take time/hog memory
return FALSE;//allow other handlers (specifically the pitch entry one)
}
gint
scorearea_enter_event(GtkWidget *widget, GdkEventCrossing *event) {
//g_print("start the enter with ks = %x and state %x\n", Denemo.keyboard_state, event->state);
if(event->state&GDK_CONTROL_MASK)
Denemo.keyboard_state |= GDK_CONTROL_MASK;
else
Denemo.keyboard_state &= ~GDK_CONTROL_MASK;
if(event->state&GDK_SHIFT_MASK)
Denemo.keyboard_state |= GDK_SHIFT_MASK;
else
Denemo.keyboard_state &= ~GDK_SHIFT_MASK;
#if 0
//perhaps it would be better to clear Denemo.keyboard_state on focus out event???
if(event->state&GDK_MOD1_MASK)
Denemo.keyboard_state |= GDK_MOD1_MASK;
else
Denemo.keyboard_state &= ~(CHORD_MASK|GDK_MOD1_MASK);
#endif
// g_print("end the enter with ks %x (values %x %x)\n", event->state, ~GDK_CONTROL_MASK, Denemo.keyboard_state & (~GDK_CONTROL_MASK) );
set_midi_in_status();
return FALSE;//allow other handlers
}
/**
* Mouse motion callback
*
*/
gint
scorearea_motion_notify (GtkWidget * widget, GdkEventButton * event)
{
DenemoGUI *gui = Denemo.gui;
if(gui==NULL || gui->si==NULL)
return FALSE;
if(Denemo.scorearea==NULL)
return FALSE;
gint line_height = Denemo.scorearea->allocation.height*gui->si->system_height;
if (event->y < 0)
event->y = 0.0;
gint line_num = ((int)event->y)/line_height;
#define DENEMO_MINIMUM_SYSTEM_HEIGHT (0.01)
if(dragging_separator) {
gui->si->system_height = event->y/Denemo.scorearea->allocation.height;
if(gui->si->system_height<DENEMO_MINIMUM_SYSTEM_HEIGHT)
gui->si->system_height = DENEMO_MINIMUM_SYSTEM_HEIGHT;
if(gui->si->system_height>1.0)
gui->si->system_height = 1.0;
scorearea_configure_event(Denemo.scorearea, NULL);
gtk_widget_queue_draw (Denemo.scorearea);
return TRUE;
}
if(line_height - ((int)event->y - 8)%line_height<12)
gdk_window_set_cursor(Denemo.window->window, gdk_cursor_new(GDK_SB_V_DOUBLE_ARROW));
else
gdk_window_set_cursor(Denemo.window->window, gdk_cursor_new(GDK_LEFT_PTR));//FIXME? does this take time/hog memory
transform_coords(&event->x, &event->y);
// g_print("Marked %d\n", gui->si->markstaffnum);
if(gui->lefts[line_num] == 0)
return TRUE;
if(event->x<LEFT_MARGIN) {
struct placement_info pi; //FIXME duplicate code
get_placement_from_coordinates (&pi, event->x, event->y, gui->lefts[line_num],gui->rights[line_num],gui->scales[line_num]);
if(pi.staff_number==gui->si->currentstaffnum) {
gint offset = (gint)get_click_height(gui, event->y);
if(offset<STAFF_HEIGHT/2) {
if(((DenemoStaff*)gui->si->currentstaff->data)->staff_directives)
gtk_menu_popup (((DenemoStaff*)gui->si->currentstaff->data)->staffmenu, NULL, NULL, NULL, NULL,0, gtk_get_current_event_time()) ;
}
}
}
if (lh_down || (selecting && gui->si->markstaffnum)){
struct placement_info pi;
pi.the_staff=NULL;
if (event->y < 0)
get_placement_from_coordinates (&pi, event->x, 0, gui->lefts[line_num],gui->rights[line_num],gui->scales[line_num]);
else
get_placement_from_coordinates (&pi, event->x, event->y, gui->lefts[line_num],gui->rights[line_num],gui->scales[line_num]);
if(pi.the_staff==NULL)
return TRUE;//could not place the cursor
if (pi.the_measure != NULL){ /*don't place cursor in a place that is not there*/
change_staff(gui->si, pi.staff_number, pi.the_staff);
gui->si->currentmeasurenum = pi.measure_number;
gui->si->currentmeasure = pi.the_measure;
gui->si->currentobject = pi.the_obj;
gui->si->cursor_x = pi.cursor_x;
gui->si->cursor_appending
=
(gui->si->cursor_x ==
(gint) (g_list_length ((objnode *) gui->si->currentmeasure->data)));
set_cursor_y_from_click (gui, event->y);
if(lh_down & !selecting){
set_mark(gui);
selecting=TRUE;
}
calcmarkboundaries (gui->si);
if(event->state&(GDK_BUTTON1_MASK|GDK_BUTTON2_MASK|GDK_BUTTON3_MASK))
perform_command(event->state, GESTURE_MOVE, event->state&GDK_BUTTON1_MASK);
/* redraw to show new cursor position */
gtk_widget_queue_draw (Denemo.scorearea);
}
}
if(Denemo.gui->midi_destination & MIDICONDUCT) {
advance_time(0.01);
return TRUE;
}
return TRUE;
}
/**
* Mouse button press callback
*
*/
gint
scorearea_button_press (GtkWidget * widget, GdkEventButton * event)
{
DenemoGUI *gui = Denemo.gui;
if(gui==NULL || gui->si==NULL)
return FALSE;
//if the cursor is at a system separator start dragging it
gint line_height = Denemo.scorearea->allocation.height*gui->si->system_height;
gint line_num = ((int)event->y)/line_height;
//g_print("diff %d\n", line_height - ((int)event->y)%line_height);
if(dragging_separator == FALSE)
if(line_height - ((int)event->y - 8)%line_height<12) {
dragging_separator = TRUE;
return TRUE;
}
dragging_separator = FALSE;
//g_print("before %f %f\n", event->x, event->y);
transform_coords(&event->x, &event->y);
//g_print("after %f %f\n", event->x, event->y);
gboolean left = (event->button != 3);
gtk_widget_grab_focus(widget);
gint key = gui->si->maxkeywidth;
gint cmajor = key?0:5;//allow some area for keysig in C-major
if(gui->lefts[line_num] == 0)
return TRUE;//On an empty system at the bottom where there is not enough room to draw another staff.
struct placement_info pi;
pi.the_staff=NULL;
if (event->y < 0)
get_placement_from_coordinates (&pi, event->x, 0, gui->lefts[line_num],gui->rights[line_num],gui->scales[line_num]);
else
get_placement_from_coordinates (&pi, event->x, event->y, gui->lefts[line_num],gui->rights[line_num],gui->scales[line_num]);
if(pi.the_staff==NULL)
return TRUE;//could not place the cursor
change_staff(gui->si, pi.staff_number, pi.the_staff);
if(left && (gui->si->leftmeasurenum>1) && (event->x<KEY_MARGIN+SPACE_FOR_TIME+key) && (event->x>LEFT_MARGIN)){
moveto_currentmeasurenum(gui, gui->si->leftmeasurenum-1);
write_status(gui);
gtk_widget_queue_draw (Denemo.scorearea);
return TRUE;
}
else
if(pi.nextmeasure) {
moveto_currentmeasurenum(gui, gui->si->rightmeasurenum+1);
write_status(gui);
}
if (pi.the_measure != NULL){ /*don't place cursor in a place that is not there*/
//gui->si->currentstaffnum = pi.staff_number;
//gui->si->currentstaff = pi.the_staff;
gui->si->currentmeasurenum = pi.measure_number;
gui->si->currentmeasure = pi.the_measure;
gui->si->currentobject = pi.the_obj;
gui->si->cursor_x = pi.cursor_x;
gui->si->cursor_appending
=
(gui->si->cursor_x ==
(gint) (g_list_length ((objnode *) gui->si->currentmeasure->data)));
set_cursor_y_from_click (gui, event->y);
write_status(gui);
}
if(event->x<LEFT_MARGIN) {
gint offset = (gint)get_click_height(gui, event->y);
if(offset<STAFF_HEIGHT/2) {
if(((DenemoStaff*)gui->si->currentstaff->data)->staff_directives)
gtk_menu_popup (((DenemoStaff*)gui->si->currentstaff->data)->staffmenu, NULL, NULL, NULL, NULL,0, gtk_get_current_event_time()) ;
}
else
if(((DenemoStaff*)gui->si->currentstaff->data)->voice_directives)
gtk_menu_popup (((DenemoStaff*)gui->si->currentstaff->data)->voicemenu, NULL, NULL, NULL, NULL,0, gtk_get_current_event_time()) ;
return TRUE;
} else if(gui->si->leftmeasurenum==1) {
if(event->x<KEY_MARGIN-cmajor) {
popup_menu("/InitialClefEditPopup");
return TRUE;
} else if(event->x<KEY_MARGIN+key+cmajor) {
popup_menu("/InitialKeyEditPopup");
return TRUE;
} else if(event->x<KEY_MARGIN+SPACE_FOR_TIME+key) {
popup_menu("/InitialTimeEditPopup");
return TRUE;
}
}
if(left) {
// if(!(GDK_CONTROL_MASK&event->state))
gui->si->markstaffnum = 0;
// else
// calcmarkboundaries (gui->si);
lh_down = TRUE;
} else {
if(gui->si->cursor_appending)
movecursorleft(NULL);//so that right click in appending position acts on previous object
}
/* Redraw to show new cursor position, note a real draw is needed because of side effects on display*/
gtk_widget_draw (Denemo.scorearea, NULL);
set_cursor_for(event->state | (left?GDK_BUTTON1_MASK:GDK_BUTTON3_MASK));
perform_command(event->state | (left?GDK_BUTTON1_MASK:GDK_BUTTON3_MASK), GESTURE_PRESS, left);
return TRUE;
}
/**
* Mouse button release callback
*
*/
gint
scorearea_button_release (GtkWidget * widget, GdkEventButton * event)
{
DenemoGUI *gui = Denemo.gui;
if(gui==NULL || gui->si==NULL)
return FALSE;
gboolean left = (event->button != 3);
if(dragging_separator) {
dragging_separator = FALSE;
return TRUE;
}
//g_signal_handlers_block_by_func(Denemo.scorearea, G_CALLBACK (scorearea_motion_notify), gui);
if(left)
lh_down = FALSE;
selecting = FALSE;
set_cursor_for(event->state&DENEMO_MODIFIER_MASK);
perform_command(event->state, GESTURE_RELEASE, left);
return TRUE;
}
gint
scorearea_scroll_event (GtkWidget *widget, GdkEventScroll *event) {
DenemoGUI *gui = Denemo.gui;
if(gui==NULL || gui->si==NULL)
return FALSE;
switch(event->direction) {
DenemoScriptParam param;
case GDK_SCROLL_UP:
if(event->state&GDK_CONTROL_MASK) {
Denemo.gui->si->zoom *= 1.1;
scorearea_configure_event(Denemo.scorearea, NULL);
// displayhelper(gui);
//update_vscrollbar (gui); these do not seem to work ...
//update_hscrollbar (gui);
} else
if(event->state&GDK_SHIFT_MASK) {
scroll_left ();
} else {
movetostaffup (¶m);
if(!param.status)
warningmessage("This is the top staff");
}
break;
case GDK_SCROLL_DOWN:
if(event->state&GDK_CONTROL_MASK) {
Denemo.gui->si->zoom /= 1.1;
if(Denemo.gui->si->zoom <0.01)
Denemo.gui->si->zoom = 0.01;
scorearea_configure_event(Denemo.scorearea, NULL);
//displayhelper(gui);
} else
if(event->state&GDK_SHIFT_MASK) {
scroll_right ();
} else {
movetostaffdown (¶m);
if(!param.status)
warningmessage("This is the bottom staff");
}
break;
case GDK_SCROLL_LEFT:
movetomeasureleft (¶m);
if(!param.status)
warningmessage("This is the first measure");
break;
case GDK_SCROLL_RIGHT:
movetomeasureright (¶m);
if(!param.status)
warningmessage("This is the last measure");
break;
}
displayhelper(Denemo.gui);
return FALSE;
}
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