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STR 749: Adds cut/copy/paste popup menu to Fl_Input

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This commit is contained in:
Matthias Melcher 2023-11-25 21:42:19 +01:00
parent 09242ee16d
commit 7bef4ebf78
2 changed files with 84 additions and 8 deletions
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3
FL/Fl_Input.H
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@ -261,6 +261,9 @@ protected:
public:
int handle(int) FL_OVERRIDE;
Fl_Input(int,int,int,int,const char * = 0);
static const char *cut_menu_text;
static const char *copy_menu_text;
static const char *paste_menu_text;
};
#endif

89
src/Fl_Input.cxx
View File

@ -38,11 +38,25 @@
#include <FL/Fl_Output.H>
#include <FL/Fl_Multiline_Output.H>
#include <FL/Fl_Secret_Input.H>
#include <FL/Fl_Menu_Item.H>
#ifdef HAVE_LOCALE_H
# include <locale.h>
#endif
/** [this text may be customized at run-time] */
const char *Fl_Input::cut_menu_text = "Cut";
/** [this text may be customized at run-time] */
const char *Fl_Input::copy_menu_text = "Copy";
/** [this text may be customized at run-time] */
const char *Fl_Input::paste_menu_text = "Paste";
static Fl_Menu_Item rmb_menu[] = {
{ Fl_Input::cut_menu_text, 0, NULL, (void*)1 },
{ Fl_Input::copy_menu_text, 0, NULL, (void*)2 },
{ Fl_Input::paste_menu_text, 0, NULL, (void*)3 },
{ NULL }
};
void Fl_Input::draw() {
if (input_type() == FL_HIDDEN_INPUT) return;
@ -468,6 +482,14 @@ int Fl_Input::handle_key() {
return 0; // ignored
}
/** \internal
Simple function that determines if a character is a whitespace.
\todo This function is not UTF-8-aware.
*/
static int _isspace(char c) {
return (c&128 || isspace(c));
}
int Fl_Input::handle(int event) {
static int dnd_save_position, dnd_save_mark, drag_start = -1, newpos;
static Fl_Widget *dnd_save_focus = NULL;
@ -532,21 +554,70 @@ int Fl_Input::handle(int event) {
Fl_Input_::handle_mouse(x()+Fl::box_dx(b), y()+Fl::box_dy(b),
w()-Fl::box_dw(b), h()-Fl::box_dh(b), 0);
newpos = insert_position();
insert_position( oldpos, oldmark );
if (Fl::focus()==this && !Fl::event_state(FL_SHIFT) && input_type()!=FL_SECRET_INPUT &&
( (newpos >= mark() && newpos < insert_position()) ||
(newpos >= insert_position() && newpos < mark()) ) ) {
// user clicked in the selection, may be trying to drag
drag_start = newpos;
// on right mouse button, pop up a Cut/Copy/Paste menu
if (Fl::event_button() == FL_RIGHT_MOUSE) {
if ( ((oldpos < newpos) && (oldmark > newpos))
|| ((oldmark < newpos) && (oldpos > newpos))
|| (type() == FL_SECRET_INPUT)) {
// if the user clicked inside an existing selection, keep
// the selection
insert_position(oldpos, oldmark);
} else {
if ((index(newpos) == 0) || (index(newpos) == '\n')) {
// if clicked to the right of the line or text end, clear the
// selection and set the cursor at the end of the line
insert_position(newpos, newpos);
} else if (_isspace(index(newpos))) {
// if clicked into a whitespace, select the entire whitespace
oldpos = newpos;
while (oldpos > 0 && _isspace(index(oldpos-1))) oldpos--;
oldmark = newpos+1;
while (oldmark < size() && _isspace(index(oldmark))) oldmark++;
insert_position(oldpos, oldmark);
} else {
// if clicked on a word, select the entire word
insert_position(word_start(newpos), word_end(newpos));
}
}
if (readonly()) { // give only the menu options that make sense
rmb_menu[0].deactivate(); // cut
rmb_menu[2].deactivate(); // paste
} else {
rmb_menu[0].activate(); // cut
rmb_menu[2].activate(); // paste
}
// pop up the menu
const Fl_Menu_Item *mi = rmb_menu->popup(Fl::event_x(), Fl::event_y());
if (mi) switch (mi->argument()) {
case 1:
if (type() != FL_SECRET_INPUT) kf_copy_cut();
break;
case 2:
if (type() != FL_SECRET_INPUT) kf_copy();
break;
case 3:
kf_paste();
break;
}
return 1;
} else {
insert_position( oldpos, oldmark );
if (Fl::focus()==this && !Fl::event_state(FL_SHIFT) && input_type()!=FL_SECRET_INPUT &&
( (newpos >= mark() && newpos < insert_position()) ||
(newpos >= insert_position() && newpos < mark()) ) ) {
// user clicked in the selection, may be trying to drag
drag_start = newpos;
return 1;
}
drag_start = -1;
}
drag_start = -1;
}
if (Fl::focus() != this) {
Fl::focus(this);
handle(FL_FOCUS);
}
break;
case FL_DRAG:
@ -566,9 +637,11 @@ int Fl_Input::handle(int event) {
break;
case FL_RELEASE:
if (Fl::event_button() == 2) {
if (Fl::event_button() == FL_MIDDLE_MOUSE) {
Fl::event_is_click(0); // stop double click from picking a word
Fl::paste(*this, 0);
} else if (Fl::event_button() == FL_RIGHT_MOUSE) {
return 1;
} else if (!Fl::event_is_click()) {
// copy drag-selected text to the clipboard.
copy(0);