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Allow for scrolling acceleration in alternate screen mode when using low-resolution input devices like mice

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This commit is contained in:
Luflosi 2018-12-23 12:30:13 +01:00
parent be71f5f1f4
commit 76059882c4
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GPG Key ID: 14140F703B7D8362
1 changed files with 8 additions and 9 deletions
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17
kitty/mouse.c
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@ -570,6 +570,7 @@ scroll_event(double UNUSED xoffset, double yoffset, int flags) {
int s;
bool is_high_resolution = flags & 1;
Screen *screen = w->render_data.screen;
if (is_high_resolution) {
yoffset *= OPT(touch_scroll_multiplier);
if (yoffset * global_state.callback_os_window->pending_scroll_pixels < 0) {
@ -583,7 +584,12 @@ scroll_event(double UNUSED xoffset, double yoffset, int flags) {
s = (int)round(pixels) / (int)global_state.callback_os_window->fonts_data->cell_height;
global_state.callback_os_window->pending_scroll_pixels = pixels - s * (int) global_state.callback_os_window->fonts_data->cell_height;
} else {
s = (int) round(yoffset * OPT(wheel_scroll_multiplier));
// If we are about to send a mouse button 4/5 event,
// we ignore 'wheel_scroll_multiplier'
if (screen->linebuf == screen->main_linebuf || !screen->modes.mouse_tracking_mode) {
yoffset *= OPT(wheel_scroll_multiplier);
}
s = (int) round(yoffset);
// apparently on cocoa some mice generate really small yoffset values
// when scrolling slowly https://github.com/kovidgoyal/kitty/issues/1238
if (s == 0 && yoffset != 0) s = yoffset > 0 ? 1 : -1;
@ -591,7 +597,6 @@ scroll_event(double UNUSED xoffset, double yoffset, int flags) {
}
if (s == 0) return;
bool upwards = s > 0;
Screen *screen = w->render_data.screen;
if (screen->linebuf == screen->main_linebuf) {
screen_history_scroll(screen, abs(s), upwards);
} else {
@ -599,13 +604,7 @@ scroll_event(double UNUSED xoffset, double yoffset, int flags) {
int sz = encode_mouse_event(w, upwards ? GLFW_MOUSE_BUTTON_4 : GLFW_MOUSE_BUTTON_5, PRESS, 0);
if (sz > 0) {
mouse_event_buf[sz] = 0;
if (is_high_resolution) {
for (s = abs(s); s > 0; s--) {
write_escape_code_to_child(screen, CSI, mouse_event_buf);
}
} else {
// Since we are sending a mouse button 4/5 event, we ignore 's'
// and simply send one event per received scroll event
for (s = abs(s); s > 0; s--) {
write_escape_code_to_child(screen, CSI, mouse_event_buf);
}
}