489 lines
14 KiB
C
489 lines
14 KiB
C
//========================================================================
|
|
// Cursor & input mode tests
|
|
// Copyright (c) Camilla Löwy <elmindreda@glfw.org>
|
|
//
|
|
// This software is provided 'as-is', without any express or implied
|
|
// warranty. In no event will the authors be held liable for any damages
|
|
// arising from the use of this software.
|
|
//
|
|
// Permission is granted to anyone to use this software for any purpose,
|
|
// including commercial applications, and to alter it and redistribute it
|
|
// freely, subject to the following restrictions:
|
|
//
|
|
// 1. The origin of this software must not be misrepresented; you must not
|
|
// claim that you wrote the original software. If you use this software
|
|
// in a product, an acknowledgment in the product documentation would
|
|
// be appreciated but is not required.
|
|
//
|
|
// 2. Altered source versions must be plainly marked as such, and must not
|
|
// be misrepresented as being the original software.
|
|
//
|
|
// 3. This notice may not be removed or altered from any source
|
|
// distribution.
|
|
//
|
|
//========================================================================
|
|
//
|
|
// This test provides an interface to the cursor image and cursor mode
|
|
// parts of the API.
|
|
//
|
|
// Custom cursor image generation by urraka.
|
|
//
|
|
//========================================================================
|
|
|
|
#include <glad/gl.h>
|
|
#define GLFW_INCLUDE_NONE
|
|
#include <GLFW/glfw3.h>
|
|
|
|
#if defined(_MSC_VER)
|
|
// Make MS math.h define M_PI
|
|
#define _USE_MATH_DEFINES
|
|
#endif
|
|
|
|
#include <math.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "linmath.h"
|
|
|
|
#define CURSOR_FRAME_COUNT 60
|
|
|
|
static const char* vertex_shader_text =
|
|
"#version 110\n"
|
|
"uniform mat4 MVP;\n"
|
|
"attribute vec2 vPos;\n"
|
|
"void main()\n"
|
|
"{\n"
|
|
" gl_Position = MVP * vec4(vPos, 0.0, 1.0);\n"
|
|
"}\n";
|
|
|
|
static const char* fragment_shader_text =
|
|
"#version 110\n"
|
|
"void main()\n"
|
|
"{\n"
|
|
" gl_FragColor = vec4(1.0);\n"
|
|
"}\n";
|
|
|
|
static double cursor_x;
|
|
static double cursor_y;
|
|
static int swap_interval = 1;
|
|
static int wait_events = GLFW_TRUE;
|
|
static int animate_cursor = GLFW_FALSE;
|
|
static int track_cursor = GLFW_FALSE;
|
|
static GLFWcursor* standard_cursors[10];
|
|
static GLFWcursor* tracking_cursor = NULL;
|
|
|
|
static void error_callback(int error, const char* description)
|
|
{
|
|
fprintf(stderr, "Error: %s\n", description);
|
|
}
|
|
|
|
static float star(int x, int y, float t)
|
|
{
|
|
const float c = 64 / 2.f;
|
|
|
|
const float i = (0.25f * (float) sin(2.f * M_PI * t) + 0.75f);
|
|
const float k = 64 * 0.046875f * i;
|
|
|
|
const float dist = (float) sqrt((x - c) * (x - c) + (y - c) * (y - c));
|
|
|
|
const float salpha = 1.f - dist / c;
|
|
const float xalpha = (float) x == c ? c : k / (float) fabs(x - c);
|
|
const float yalpha = (float) y == c ? c : k / (float) fabs(y - c);
|
|
|
|
return (float) fmax(0.f, fmin(1.f, i * salpha * 0.2f + salpha * xalpha * yalpha));
|
|
}
|
|
|
|
static GLFWcursor* create_cursor_frame(float t)
|
|
{
|
|
int i = 0, x, y;
|
|
unsigned char buffer[64 * 64 * 4];
|
|
const GLFWimage image = { 64, 64, buffer };
|
|
|
|
for (y = 0; y < image.width; y++)
|
|
{
|
|
for (x = 0; x < image.height; x++)
|
|
{
|
|
buffer[i++] = 255;
|
|
buffer[i++] = 255;
|
|
buffer[i++] = 255;
|
|
buffer[i++] = (unsigned char) (255 * star(x, y, t));
|
|
}
|
|
}
|
|
|
|
return glfwCreateCursor(&image, image.width / 2, image.height / 2);
|
|
}
|
|
|
|
static GLFWcursor* create_tracking_cursor(void)
|
|
{
|
|
int i = 0, x, y;
|
|
unsigned char buffer[32 * 32 * 4];
|
|
const GLFWimage image = { 32, 32, buffer };
|
|
|
|
for (y = 0; y < image.width; y++)
|
|
{
|
|
for (x = 0; x < image.height; x++)
|
|
{
|
|
if (x == 7 || y == 7)
|
|
{
|
|
buffer[i++] = 255;
|
|
buffer[i++] = 0;
|
|
buffer[i++] = 0;
|
|
buffer[i++] = 255;
|
|
}
|
|
else
|
|
{
|
|
buffer[i++] = 0;
|
|
buffer[i++] = 0;
|
|
buffer[i++] = 0;
|
|
buffer[i++] = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
return glfwCreateCursor(&image, 7, 7);
|
|
}
|
|
|
|
static void cursor_position_callback(GLFWwindow* window, double x, double y)
|
|
{
|
|
printf("%0.3f: Cursor position: %f %f (%+f %+f)\n",
|
|
glfwGetTime(),
|
|
x, y, x - cursor_x, y - cursor_y);
|
|
|
|
cursor_x = x;
|
|
cursor_y = y;
|
|
}
|
|
|
|
static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
|
|
{
|
|
if (action != GLFW_PRESS)
|
|
return;
|
|
|
|
switch (key)
|
|
{
|
|
case GLFW_KEY_A:
|
|
{
|
|
animate_cursor = !animate_cursor;
|
|
if (!animate_cursor)
|
|
glfwSetCursor(window, NULL);
|
|
|
|
break;
|
|
}
|
|
|
|
case GLFW_KEY_ESCAPE:
|
|
{
|
|
if (glfwGetInputMode(window, GLFW_CURSOR) != GLFW_CURSOR_DISABLED)
|
|
{
|
|
glfwSetWindowShouldClose(window, GLFW_TRUE);
|
|
break;
|
|
}
|
|
|
|
/* FALLTHROUGH */
|
|
}
|
|
|
|
case GLFW_KEY_N:
|
|
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
|
|
glfwGetCursorPos(window, &cursor_x, &cursor_y);
|
|
printf("(( cursor is normal ))\n");
|
|
break;
|
|
|
|
case GLFW_KEY_D:
|
|
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
|
|
printf("(( cursor is disabled ))\n");
|
|
break;
|
|
|
|
case GLFW_KEY_H:
|
|
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
|
|
printf("(( cursor is hidden ))\n");
|
|
break;
|
|
|
|
case GLFW_KEY_R:
|
|
if (!glfwRawMouseMotionSupported())
|
|
break;
|
|
|
|
if (glfwGetInputMode(window, GLFW_RAW_MOUSE_MOTION))
|
|
{
|
|
glfwSetInputMode(window, GLFW_RAW_MOUSE_MOTION, GLFW_FALSE);
|
|
printf("(( raw input is disabled ))\n");
|
|
}
|
|
else
|
|
{
|
|
glfwSetInputMode(window, GLFW_RAW_MOUSE_MOTION, GLFW_TRUE);
|
|
printf("(( raw input is enabled ))\n");
|
|
}
|
|
break;
|
|
|
|
case GLFW_KEY_SPACE:
|
|
swap_interval = 1 - swap_interval;
|
|
printf("(( swap interval: %i ))\n", swap_interval);
|
|
glfwSwapInterval(swap_interval);
|
|
break;
|
|
|
|
case GLFW_KEY_W:
|
|
wait_events = !wait_events;
|
|
printf("(( %sing for events ))\n", wait_events ? "wait" : "poll");
|
|
break;
|
|
|
|
case GLFW_KEY_T:
|
|
track_cursor = !track_cursor;
|
|
if (track_cursor)
|
|
glfwSetCursor(window, tracking_cursor);
|
|
else
|
|
glfwSetCursor(window, NULL);
|
|
|
|
break;
|
|
|
|
case GLFW_KEY_P:
|
|
{
|
|
double x, y;
|
|
glfwGetCursorPos(window, &x, &y);
|
|
|
|
printf("Query before set: %f %f (%+f %+f)\n",
|
|
x, y, x - cursor_x, y - cursor_y);
|
|
cursor_x = x;
|
|
cursor_y = y;
|
|
|
|
glfwSetCursorPos(window, cursor_x, cursor_y);
|
|
glfwGetCursorPos(window, &x, &y);
|
|
|
|
printf("Query after set: %f %f (%+f %+f)\n",
|
|
x, y, x - cursor_x, y - cursor_y);
|
|
cursor_x = x;
|
|
cursor_y = y;
|
|
break;
|
|
}
|
|
|
|
case GLFW_KEY_UP:
|
|
glfwSetCursorPos(window, 0, 0);
|
|
glfwGetCursorPos(window, &cursor_x, &cursor_y);
|
|
break;
|
|
|
|
case GLFW_KEY_DOWN:
|
|
{
|
|
int width, height;
|
|
glfwGetWindowSize(window, &width, &height);
|
|
glfwSetCursorPos(window, width - 1, height - 1);
|
|
glfwGetCursorPos(window, &cursor_x, &cursor_y);
|
|
break;
|
|
}
|
|
|
|
case GLFW_KEY_0:
|
|
glfwSetCursor(window, NULL);
|
|
break;
|
|
|
|
case GLFW_KEY_1:
|
|
case GLFW_KEY_2:
|
|
case GLFW_KEY_3:
|
|
case GLFW_KEY_4:
|
|
case GLFW_KEY_5:
|
|
case GLFW_KEY_6:
|
|
case GLFW_KEY_7:
|
|
case GLFW_KEY_8:
|
|
case GLFW_KEY_9:
|
|
{
|
|
int index = key - GLFW_KEY_1;
|
|
if (mods & GLFW_MOD_SHIFT)
|
|
index += 9;
|
|
|
|
if (index < sizeof(standard_cursors) / sizeof(standard_cursors[0]))
|
|
glfwSetCursor(window, standard_cursors[index]);
|
|
|
|
break;
|
|
}
|
|
|
|
case GLFW_KEY_F11:
|
|
case GLFW_KEY_ENTER:
|
|
{
|
|
static int x, y, width, height;
|
|
|
|
if (mods != GLFW_MOD_ALT)
|
|
return;
|
|
|
|
if (glfwGetWindowMonitor(window))
|
|
glfwSetWindowMonitor(window, NULL, x, y, width, height, 0);
|
|
else
|
|
{
|
|
GLFWmonitor* monitor = glfwGetPrimaryMonitor();
|
|
const GLFWvidmode* mode = glfwGetVideoMode(monitor);
|
|
glfwGetWindowPos(window, &x, &y);
|
|
glfwGetWindowSize(window, &width, &height);
|
|
glfwSetWindowMonitor(window, monitor,
|
|
0, 0, mode->width, mode->height,
|
|
mode->refreshRate);
|
|
}
|
|
|
|
glfwGetCursorPos(window, &cursor_x, &cursor_y);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
int i;
|
|
GLFWwindow* window;
|
|
GLFWcursor* star_cursors[CURSOR_FRAME_COUNT];
|
|
GLFWcursor* current_frame = NULL;
|
|
GLuint vertex_buffer, vertex_shader, fragment_shader, program;
|
|
GLint mvp_location, vpos_location;
|
|
|
|
glfwSetErrorCallback(error_callback);
|
|
|
|
if (!glfwInit())
|
|
exit(EXIT_FAILURE);
|
|
|
|
tracking_cursor = create_tracking_cursor();
|
|
if (!tracking_cursor)
|
|
{
|
|
glfwTerminate();
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
for (i = 0; i < CURSOR_FRAME_COUNT; i++)
|
|
{
|
|
star_cursors[i] = create_cursor_frame(i / (float) CURSOR_FRAME_COUNT);
|
|
if (!star_cursors[i])
|
|
{
|
|
glfwTerminate();
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < sizeof(standard_cursors) / sizeof(standard_cursors[0]); i++)
|
|
{
|
|
const int shapes[] = {
|
|
GLFW_ARROW_CURSOR,
|
|
GLFW_IBEAM_CURSOR,
|
|
GLFW_CROSSHAIR_CURSOR,
|
|
GLFW_POINTING_HAND_CURSOR,
|
|
GLFW_RESIZE_EW_CURSOR,
|
|
GLFW_RESIZE_NS_CURSOR,
|
|
GLFW_RESIZE_NWSE_CURSOR,
|
|
GLFW_RESIZE_NESW_CURSOR,
|
|
GLFW_RESIZE_ALL_CURSOR,
|
|
GLFW_NOT_ALLOWED_CURSOR
|
|
};
|
|
|
|
standard_cursors[i] = glfwCreateStandardCursor(shapes[i]);
|
|
}
|
|
|
|
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
|
|
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
|
|
|
|
window = glfwCreateWindow(640, 480, "Cursor Test", NULL, NULL);
|
|
if (!window)
|
|
{
|
|
glfwTerminate();
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
glfwMakeContextCurrent(window);
|
|
gladLoadGL(glfwGetProcAddress);
|
|
|
|
glGenBuffers(1, &vertex_buffer);
|
|
glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer);
|
|
|
|
vertex_shader = glCreateShader(GL_VERTEX_SHADER);
|
|
glShaderSource(vertex_shader, 1, &vertex_shader_text, NULL);
|
|
glCompileShader(vertex_shader);
|
|
|
|
fragment_shader = glCreateShader(GL_FRAGMENT_SHADER);
|
|
glShaderSource(fragment_shader, 1, &fragment_shader_text, NULL);
|
|
glCompileShader(fragment_shader);
|
|
|
|
program = glCreateProgram();
|
|
glAttachShader(program, vertex_shader);
|
|
glAttachShader(program, fragment_shader);
|
|
glLinkProgram(program);
|
|
|
|
mvp_location = glGetUniformLocation(program, "MVP");
|
|
vpos_location = glGetAttribLocation(program, "vPos");
|
|
|
|
glEnableVertexAttribArray(vpos_location);
|
|
glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE,
|
|
sizeof(vec2), (void*) 0);
|
|
glUseProgram(program);
|
|
|
|
glfwGetCursorPos(window, &cursor_x, &cursor_y);
|
|
printf("Cursor position: %f %f\n", cursor_x, cursor_y);
|
|
|
|
glfwSetCursorPosCallback(window, cursor_position_callback);
|
|
glfwSetKeyCallback(window, key_callback);
|
|
|
|
while (!glfwWindowShouldClose(window))
|
|
{
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
|
|
if (track_cursor)
|
|
{
|
|
int wnd_width, wnd_height, fb_width, fb_height;
|
|
float scale;
|
|
vec2 vertices[4];
|
|
mat4x4 mvp;
|
|
|
|
glfwGetWindowSize(window, &wnd_width, &wnd_height);
|
|
glfwGetFramebufferSize(window, &fb_width, &fb_height);
|
|
|
|
glViewport(0, 0, fb_width, fb_height);
|
|
|
|
scale = (float) fb_width / (float) wnd_width;
|
|
vertices[0][0] = 0.5f;
|
|
vertices[0][1] = (float) (fb_height - floor(cursor_y * scale) - 1.f + 0.5f);
|
|
vertices[1][0] = (float) fb_width + 0.5f;
|
|
vertices[1][1] = (float) (fb_height - floor(cursor_y * scale) - 1.f + 0.5f);
|
|
vertices[2][0] = (float) floor(cursor_x * scale) + 0.5f;
|
|
vertices[2][1] = 0.5f;
|
|
vertices[3][0] = (float) floor(cursor_x * scale) + 0.5f;
|
|
vertices[3][1] = (float) fb_height + 0.5f;
|
|
|
|
glBufferData(GL_ARRAY_BUFFER,
|
|
sizeof(vertices),
|
|
vertices,
|
|
GL_STREAM_DRAW);
|
|
|
|
mat4x4_ortho(mvp, 0.f, (float) fb_width, 0.f, (float) fb_height, 0.f, 1.f);
|
|
glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) mvp);
|
|
|
|
glDrawArrays(GL_LINES, 0, 4);
|
|
}
|
|
|
|
glfwSwapBuffers(window);
|
|
|
|
if (animate_cursor)
|
|
{
|
|
const int i = (int) (glfwGetTime() * 30.0) % CURSOR_FRAME_COUNT;
|
|
if (current_frame != star_cursors[i])
|
|
{
|
|
glfwSetCursor(window, star_cursors[i]);
|
|
current_frame = star_cursors[i];
|
|
}
|
|
}
|
|
else
|
|
current_frame = NULL;
|
|
|
|
if (wait_events)
|
|
{
|
|
if (animate_cursor)
|
|
glfwWaitEventsTimeout(1.0 / 30.0);
|
|
else
|
|
glfwWaitEvents();
|
|
}
|
|
else
|
|
glfwPollEvents();
|
|
|
|
// Workaround for an issue with msvcrt and mintty
|
|
fflush(stdout);
|
|
}
|
|
|
|
glfwDestroyWindow(window);
|
|
|
|
for (i = 0; i < CURSOR_FRAME_COUNT; i++)
|
|
glfwDestroyCursor(star_cursors[i]);
|
|
|
|
for (i = 0; i < sizeof(standard_cursors) / sizeof(standard_cursors[0]); i++)
|
|
glfwDestroyCursor(standard_cursors[i]);
|
|
|
|
glfwTerminate();
|
|
exit(EXIT_SUCCESS);
|
|
}
|
|
|