clients: Add motion event trails to clickdot
Useful for testing pointer device. Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
This commit is contained in:
Jonas Ådahl
Kristian Høgsberg
parent
c0ca399f22
commit
df211839dd
@ -1,6 +1,7 @@
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/*
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* Copyright © 2010 Intel Corporation
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* Copyright © 2012 Collabora, Ltd.
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* Copyright © 2012 Jonas Ådahl
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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@ -41,9 +42,95 @@ struct clickdot {
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struct window *window;
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struct widget *widget;
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int32_t x, y;
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cairo_surface_t *buffer;
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struct {
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int32_t x, y;
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} dot;
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struct {
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int32_t x, y;
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int32_t old_x, old_y;
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} line;
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int reset;
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};
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static void
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draw_line(struct clickdot *clickdot, cairo_t *cr,
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struct rectangle *allocation)
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{
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cairo_t *bcr;
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cairo_surface_t *tmp_buffer = NULL;
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if (clickdot->reset) {
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tmp_buffer = clickdot->buffer;
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clickdot->buffer = NULL;
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clickdot->line.x = -1;
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clickdot->line.y = -1;
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clickdot->line.old_x = -1;
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clickdot->line.old_y = -1;
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clickdot->reset = 0;
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}
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if (clickdot->buffer == NULL) {
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clickdot->buffer =
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cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
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allocation->width,
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allocation->height);
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bcr = cairo_create(clickdot->buffer);
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cairo_set_source_rgba(bcr, 0, 0, 0, 0);
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cairo_rectangle(bcr,
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0, 0,
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allocation->width, allocation->height);
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cairo_fill(bcr);
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}
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else
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bcr = cairo_create(clickdot->buffer);
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if (tmp_buffer) {
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cairo_set_source_surface(bcr, tmp_buffer, 0, 0);
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cairo_rectangle(bcr, 0, 0,
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allocation->width, allocation->height);
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cairo_clip(bcr);
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cairo_paint(bcr);
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cairo_surface_destroy(tmp_buffer);
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}
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if (clickdot->line.x != -1 && clickdot->line.y != -1) {
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if (clickdot->line.old_x != -1 &&
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clickdot->line.old_y != -1) {
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cairo_set_line_width(bcr, 2.0);
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cairo_set_source_rgb(bcr, 1, 1, 1);
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cairo_translate(bcr,
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-allocation->x, -allocation->y);
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cairo_move_to(bcr,
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clickdot->line.old_x,
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clickdot->line.old_y);
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cairo_line_to(bcr,
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clickdot->line.x,
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clickdot->line.y);
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cairo_stroke(bcr);
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}
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clickdot->line.old_x = clickdot->line.x;
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clickdot->line.old_y = clickdot->line.y;
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}
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cairo_destroy(bcr);
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cairo_set_source_surface(cr, clickdot->buffer,
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allocation->x, allocation->y);
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cairo_set_operator(cr, CAIRO_OPERATOR_ADD);
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cairo_rectangle(cr,
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allocation->x, allocation->y,
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allocation->width, allocation->height);
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cairo_clip(cr);
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cairo_paint(cr);
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}
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static void
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redraw_handler(struct widget *widget, void *data)
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{
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@ -67,7 +154,9 @@ redraw_handler(struct widget *widget, void *data)
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cairo_set_source_rgba(cr, 0, 0, 0, 0.8);
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cairo_fill(cr);
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cairo_translate(cr, clickdot->x + 0.5, clickdot->y + 0.5);
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draw_line(clickdot, cr, &allocation);
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cairo_translate(cr, clickdot->dot.x + 0.5, clickdot->dot.y + 0.5);
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cairo_set_line_width(cr, 1.0);
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cairo_set_source_rgb(cr, 0.1, 0.9, 0.9);
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cairo_move_to(cr, 0.0, -r);
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@ -115,11 +204,44 @@ button_handler(struct widget *widget,
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struct clickdot *clickdot = data;
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if (state && button == BTN_LEFT)
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input_get_position(input, &clickdot->x, &clickdot->y);
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input_get_position(input, &clickdot->dot.x, &clickdot->dot.y);
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widget_schedule_redraw(widget);
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}
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static int
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motion_handler(struct widget *widget,
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struct input *input, uint32_t time,
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float x, float y, void *data)
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{
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struct clickdot *clickdot = data;
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clickdot->line.x = x;
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clickdot->line.y = y;
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window_schedule_redraw(clickdot->window);
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return POINTER_LEFT_PTR;
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}
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static void
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resize_handler(struct widget *widget,
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int32_t width, int32_t height,
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void *data)
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{
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struct clickdot *clickdot = data;
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clickdot->reset = 1;
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}
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static void
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leave_handler(struct widget *widget,
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struct input *input, void *data)
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{
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struct clickdot *clickdot = data;
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clickdot->reset = 1;
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}
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static struct clickdot *
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clickdot_create(struct display *display)
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{
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@ -134,6 +256,7 @@ clickdot_create(struct display *display)
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clickdot->widget = frame_create(clickdot->window, clickdot);
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window_set_title(clickdot->window, "Wayland ClickDot");
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clickdot->display = display;
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clickdot->buffer = NULL;
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window_set_key_handler(clickdot->window, key_handler);
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window_set_user_data(clickdot->window, clickdot);
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@ -142,10 +265,18 @@ clickdot_create(struct display *display)
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widget_set_redraw_handler(clickdot->widget, redraw_handler);
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widget_set_button_handler(clickdot->widget, button_handler);
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widget_set_motion_handler(clickdot->widget, motion_handler);
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widget_set_resize_handler(clickdot->widget, resize_handler);
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widget_set_leave_handler(clickdot->widget, leave_handler);
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widget_schedule_resize(clickdot->widget, 500, 400);
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clickdot->x = 250;
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clickdot->y = 200;
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clickdot->dot.x = 250;
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clickdot->dot.y = 200;
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clickdot->line.x = -1;
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clickdot->line.y = -1;
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clickdot->line.old_x = -1;
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clickdot->line.old_y = -1;
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clickdot->reset = 0;
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return clickdot;
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}
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@ -153,6 +284,8 @@ clickdot_create(struct display *display)
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static void
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clickdot_destroy(struct clickdot *clickdot)
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{
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if (clickdot->buffer)
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cairo_surface_destroy(clickdot->buffer);
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widget_destroy(clickdot->widget);
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window_destroy(clickdot->window);
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free(clickdot);
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