wlt: terminal: implement mouse-selection

This hooks up the mouse-selection with the tsm-screen selection support.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>

diff --git a/src/wlt_terminal.c b/src/wlt_terminal.c
index 45856fb..1d4ec51 100644 (file)
--- a/src/wlt_terminal.c
+++ b/src/wlt_terminal.c
@@ -28,6 +28,7 @@
  */
 
 #include <errno.h>
+#include <linux/input.h>
 #include <stdbool.h>
 #include <stdlib.h>
 #include <string.h>
@@ -53,6 +54,7 @@ struct wlt_terminal {
        struct wlt_window *wnd;
        struct wlt_widget *widget;
        struct wlt_shm_buffer buffer;
+       struct wlt_rect alloc;
 
        struct tsm_screen *scr;
        struct tsm_vte *vte;
@@ -67,6 +69,10 @@ struct wlt_terminal {
 
        wlt_terminal_cb cb;
        void *data;
+
+       int pointer_x;
+       int pointer_y;
+       bool in_selection;
 };
 
 static int draw_cell(struct tsm_screen *scr,
@@ -217,6 +223,7 @@ static void widget_resize(struct wlt_widget *widget, unsigned int flags,
        int ret;
 
        wlt_window_get_buffer(term->wnd, alloc, &term->buffer);
+       memcpy(&term->alloc, alloc, sizeof(*alloc));
 
        /* don't allow children */
        alloc->width = 0;
@@ -392,6 +399,71 @@ static bool widget_key(struct wlt_widget *widget, unsigned int mask,
        return false;
 }
 
+static void pointer_motion(struct wlt_widget *widget,
+                          unsigned int x, unsigned int y, void *data)
+{
+       struct wlt_terminal *term = data;
+       unsigned int posx, posy;
+
+       if (!wlt_rect_contains(&term->alloc, x, y)) {
+               term->pointer_x = -1;
+               term->pointer_y = -1;
+               return;
+       } else {
+               term->pointer_x = x - term->alloc.x;
+               term->pointer_y = y - term->alloc.y;
+       }
+
+       posx = term->pointer_x / term->font_normal->attr.width;
+       posy = term->pointer_y / term->font_normal->attr.height;
+
+       if (term->in_selection) {
+               tsm_screen_selection_target(term->scr, posx, posy);
+               wlt_window_schedule_redraw(term->wnd);
+       }
+}
+
+static void pointer_enter(struct wlt_widget *widget,
+                         unsigned int x, unsigned int y, void *data)
+{
+       struct wlt_terminal *term = data;
+
+       pointer_motion(widget, x, y, term);
+}
+
+static void pointer_leave(struct wlt_widget *widget, void *data)
+{
+       struct wlt_terminal *term = data;
+
+       term->pointer_x = -1;
+       term->pointer_y = -1;
+}
+
+static void pointer_button(struct wlt_widget *widget,
+                          uint32_t button, uint32_t state, void *data)
+{
+       struct wlt_terminal *term = data;
+       unsigned int posx, posy;
+
+       if (button != BTN_LEFT)
+               return;
+
+       if (state == WL_POINTER_BUTTON_STATE_PRESSED) {
+               if (!term->in_selection &&
+                   term->pointer_x >= 0 && term->pointer_y >= 0) {
+                       term->in_selection = true;
+
+                       posx = term->pointer_x / term->font_normal->attr.width;
+                       posy = term->pointer_y / term->font_normal->attr.height;
+
+                       tsm_screen_selection_start(term->scr, posx, posy);
+                       wlt_window_schedule_redraw(term->wnd);
+               }
+       } else {
+               term->in_selection = false;
+       }
+}
+
 static void vte_event(struct tsm_vte *vte, const char *u8, size_t len,
                      void *data)
 {
@@ -511,6 +583,8 @@ int wlt_terminal_new(struct wlt_terminal **out, struct wlt_window *wnd)
        wlt_widget_set_resize_cb(term->widget, widget_prepare_resize,
                                 widget_resize);
        wlt_widget_set_keyboard_cb(term->widget, widget_key);
+       wlt_widget_set_pointer_cb(term->widget, pointer_enter, pointer_leave,
+                                 pointer_motion, pointer_button);
        *out = term;
        return 0;