52d2f49d29
When starting the expo, put the mouse in the middle of the display so it is more visible to the user. Signed-off-by: Simon Glass <sjg@chromium.org>
115 lines
2.6 KiB
C
115 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2019 Google LLC
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#include <dm.h>
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#include <errno.h>
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#include <mouse.h>
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#include <video.h>
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int mouse_get_event(struct udevice *dev, struct mouse_event *evt)
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{
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struct mouse_uc_priv *uc_priv = dev_get_uclass_priv(dev);
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struct mouse_ops *ops = mouse_get_ops(dev);
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int ret;
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if (!ops->get_event)
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return -ENOSYS;
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ret = ops->get_event(dev, evt);
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if (ret)
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return ret;
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/* Update last position for motion events */
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if (evt->type == MOUSE_EV_MOTION) {
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uc_priv->last_pos.x = evt->motion.x;
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uc_priv->last_pos.y = evt->motion.y;
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}
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/* Update last position for button events and detect clicks */
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if (evt->type == MOUSE_EV_BUTTON) {
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uc_priv->last_pos.x = evt->button.x;
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uc_priv->last_pos.y = evt->button.y;
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/* Process left-button clicks */
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if (evt->button.button == BUTTON_LEFT) {
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/* Detect press->release transition (click) */
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if (uc_priv->left_pressed && !evt->button.pressed) {
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uc_priv->click_pending = true;
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uc_priv->click_pos.x = evt->button.x;
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uc_priv->click_pos.y = evt->button.y;
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}
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/* Update button state */
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uc_priv->left_pressed = evt->button.pressed;
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}
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}
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return 0;
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}
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int mouse_get_click(struct udevice *dev, struct vid_pos *pos)
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{
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struct mouse_uc_priv *uc_priv = dev_get_uclass_priv(dev);
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struct mouse_event event;
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/* Process all available events until we find a click */
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while (true) {
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if (uc_priv->click_pending) {
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*pos = uc_priv->click_pos;
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uc_priv->click_pending = false;
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break;
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}
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if (mouse_get_event(dev, &event))
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return -EAGAIN; /* No more events */
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}
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return 0;
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}
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int mouse_get_pos(struct udevice *dev, struct vid_pos *pos)
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{
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struct mouse_uc_priv *uc_priv = dev_get_uclass_priv(dev);
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*pos = uc_priv->last_pos;
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return 0;
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}
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int mouse_set_ptr_visible(struct udevice *dev, bool visible)
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{
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struct mouse_ops *ops = mouse_get_ops(dev);
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if (!ops->set_ptr_visible)
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return -ENOSYS;
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return ops->set_ptr_visible(dev, visible);
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}
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int mouse_set_video(struct udevice *dev, struct udevice *video_dev)
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{
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struct mouse_uc_priv *uc_priv = dev_get_uclass_priv(dev);
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uc_priv->video_dev = video_dev;
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if (video_dev) {
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uc_priv->video_width = video_get_xsize(video_dev);
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uc_priv->video_height = video_get_ysize(video_dev);
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uc_priv->last_pos.x = uc_priv->video_width / 2;
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uc_priv->last_pos.y = uc_priv->video_height / 2;
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} else {
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uc_priv->video_width = 0;
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uc_priv->video_height = 0;
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}
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return 0;
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}
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UCLASS_DRIVER(mouse) = {
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.id = UCLASS_MOUSE,
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.name = "mouse",
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.per_device_auto = sizeof(struct mouse_uc_priv),
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};
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