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Port mouse event encoding code to C

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Kovid Goyal
2017-09-14 16:44:00 +05:30
parent b9ac13c379
commit 43c4c71abd
5 changed files with 98 additions and 63 deletions
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70
kitty/mouse.c
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@@ -8,11 +8,13 @@
#include "state.h"
#include "screen.h"
#include "lineops.h"
#include <limits.h>
#include <math.h>
#include <GLFW/glfw3.h>
extern void set_mouse_cursor(MouseShape);
static MouseShape mouse_cursor_shape = BEAM;
typedef enum MouseActions { PRESS, RELEASE, DRAG, MOVE } MouseAction;
#define call_boss(name, ...) { \
PyObject *cret_ = PyObject_CallMethod(global_state.boss, #name, __VA_ARGS__); \
@@ -20,6 +22,74 @@ static MouseShape mouse_cursor_shape = BEAM;
else Py_DECREF(cret_); \
}
#define SHIFT_INDICATOR (1 << 2)
#define ALT_INDICATOR (1 << 3)
#define CONTROL_INDICATOR (1 << 4)
#define MOTION_INDICATOR (1 << 5)
#define EXTRA_BUTTON_INDICATOR (1 << 6)
static inline unsigned int
button_map(int button) {
switch(button) {
case GLFW_MOUSE_BUTTON_1:
return 0;
case GLFW_MOUSE_BUTTON_2:
return 1;
case GLFW_MOUSE_BUTTON_3:
return 2;
case GLFW_MOUSE_BUTTON_4:
return EXTRA_BUTTON_INDICATOR;
case GLFW_MOUSE_BUTTON_5:
return EXTRA_BUTTON_INDICATOR | 1;
default:
return UINT_MAX;
}
}
static char mouse_event_buf[64];
unsigned int
encode_mouse_event(Window *w, int button, MouseAction action, int mods) {
unsigned int x = w->mouse_cell_x + 1, y = w->mouse_cell_y + 1; // 1 based indexing
unsigned int cb = 0;
Screen *screen = w->render_data.screen;
if (action == MOVE) {
if (screen->modes.mouse_tracking_protocol != SGR_PROTOCOL) cb = 3;
} else {
cb = button_map(button);
if (cb == UINT_MAX) return 0;
}
if (action == DRAG || action == MOVE) cb |= MOTION_INDICATOR;
else if (action == RELEASE && screen->modes.mouse_tracking_protocol != SGR_PROTOCOL) cb = 3;
if (mods & GLFW_MOD_SHIFT) cb |= SHIFT_INDICATOR;
if (mods & GLFW_MOD_ALT) cb |= ALT_INDICATOR;
if (mods & GLFW_MOD_CONTROL) cb |= CONTROL_INDICATOR;
switch(screen->modes.mouse_tracking_protocol) {
case SGR_PROTOCOL:
return snprintf(mouse_event_buf, sizeof(mouse_event_buf), "\033[<%d;%d;%d%s", cb, x, y, action == RELEASE ? "m" : "M");
break;
case URXVT_PROTOCOL:
return snprintf(mouse_event_buf, sizeof(mouse_event_buf), "\033[%d;%d;%dM", cb, x, y);
break;
case UTF8_PROTOCOL:
mouse_event_buf[0] = 033; mouse_event_buf[1] = '['; mouse_event_buf[2] = cb + 32;
unsigned int sz = 3;
sz += encode_utf8(x + 32, mouse_event_buf + sz);
sz += encode_utf8(y + 32, mouse_event_buf + sz);
return sz;
break;
default:
if (x > 223 || y > 223) return 0;
else {
mouse_event_buf[0] = 033; mouse_event_buf[1] = '['; mouse_event_buf[2] = 'M'; mouse_event_buf[3] = cb + 32; mouse_event_buf[4] = x + 32; mouse_event_buf[5] = y + 32;
return 6;
}
break;
}
return 0;
}
static inline bool
contains_mouse(Window *w) {
WindowGeometry *g = &w->geometry;