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Wayland: keep mouse button state across push/release events

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Notes:

(1) Fl::e_state holds the current state of all mouse buttons which is
    returned by Fl::event_buttons() - "plural form".

(2) Fl::e_keysym holds the "key" of the current event which can be a
    mouse button, returned by Fl::event_button() - "singular form".
This commit is contained in:
Albrecht Schlosser
2023-07-12 18:49:01 +02:00
parent 858c3cad86
commit 44840af076
1 changed files with 10 additions and 4 deletions
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src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx
+10 -4
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@@ -308,10 +308,16 @@ static void pointer_button(void *data,
return;
}
int b = 0;
Fl::e_state &= ~FL_BUTTONS;
if (button == BTN_LEFT) {Fl::e_state |= FL_BUTTON1; b = 1;}
else if (button == BTN_RIGHT) {Fl::e_state |= FL_BUTTON3; b = 3;}
else if (button == BTN_MIDDLE) {Fl::e_state |= FL_BUTTON2; b = 2;}
// Fl::e_state &= ~FL_BUTTONS; // DO NOT reset the mouse button state!
if (state == WL_POINTER_BUTTON_STATE_PRESSED) {
if (button == BTN_LEFT) { Fl::e_state |= FL_BUTTON1; b = 1; }
else if (button == BTN_RIGHT) { Fl::e_state |= FL_BUTTON3; b = 3; }
else if (button == BTN_MIDDLE) { Fl::e_state |= FL_BUTTON2; b = 2; }
} else { // must be WL_POINTER_BUTTON_STATE_RELEASED
if (button == BTN_LEFT) { Fl::e_state &= ~FL_BUTTON1; b = 1; }
else if (button == BTN_RIGHT) { Fl::e_state &= ~FL_BUTTON3; b = 3; }
else if (button == BTN_MIDDLE) { Fl::e_state &= ~FL_BUTTON2; b = 2; }
}
Fl::e_keysym = FL_Button + b;
Fl::e_dx = Fl::e_dy = 0;