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GNU GENERAL PUBLIC LICENSE
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<https://www.gnu.org/licenses/why-not-lgpl.html>.

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UNAME := $(shell uname -o)
ifeq ($(UNAME),GNU/Linux)
VINCI_SRC = vinci-xcb.c
EXTRAOPTIONS = -lxcb
else ifeq ($(UNAME),Msys)
VINCI_SRC = vinci-win32.c
EXTRAOPTIONS = -mwindows
else ifeq ($(UNAME),Darwin)
VINCI_SRC = vinci-cocoa.m
EXTRAOPTIONS = -framework Cocoa -lobjc
endif
CC = gcc
CFLAGS = -std=c99 -O3
STRICT = -Wall -Wextra -pedantic -Wmissing-prototypes -Wstrict-prototypes -Wold-style-definition -Wuninitialized -Wmissing-declarations
BUILD_DIR = build
all: $(BUILD_DIR)/test
$(BUILD_DIR):
mkdir -p $(BUILD_DIR)
$(BUILD_DIR)/test: test.c $(VINCI_SRC) | $(BUILD_DIR)
$(CC) $(CFLAGS) $(STRICT) $(VINCI_SRC) test.c -o $@ $(EXTRAOPTIONS)
clean:
rm -rf $(BUILD_DIR)
.PHONY: all clean

23
README.md
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# Vinci - Cross-Platform Windowing Library
Refer to `vinci.h` and `test.c` to get started with the API.
## Supported Platforms
- Linux (via XCB)
- Windows (Win32)
- macOS (Cocoa)
## Status
- Unstable
- Undocumented
- API might change
## Building
Run `make` to build the test program.
## Legal
Copyright (C) 2025 Orastron Srl unipersonale.
Authors: Stefano D'Angelo, Paolo Marrone.
All the code in the repo is released under GPLv3. See the LICENSE file.

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/*
* Vinci
*
* Copyright (C) 2025 Orastron Srl unipersonale
*
* Vinci is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* Vinci is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Vinci. If not, see <http://www.gnu.org/licenses/>.
*
* File author: Paolo Marrone
*/
#include "vinci.h"
#include <string.h>
#include <stdio.h>
vinci *g;
window *w1, *w2;
static void on_close(window *w) {
printf("on_close %p \n", (void*)w); fflush(stdout);
window_free(w);
if (w == w1) {
w1 = NULL;
if (!w2)
vinci_stop(g);
}
if (w == w2) {
w2 = NULL;
if (!w1)
vinci_stop(g);
}
}
static void on_mouse_press (window *w, int32_t x, int32_t y, uint32_t state) {
printf("on_mouse_press %p %d %d %u \n", (void*)w, x, y, state);
}
static void on_mouse_release (window *w, int32_t x, int32_t y, uint32_t state) {
printf("on_mouse_release %p %d %d %u \n", (void*)w, x, y, state);
}
static void on_mouse_move (window *w, int32_t x, int32_t y, uint32_t state) {
printf("on_mouse_move %p %d %d %u \n", (void*)w, x, y, state);
}
static void on_window_resize (window *w, int32_t width, int32_t height) {
printf("on_window_resize %p %d %d \n", (void*) w, width, height);
}
int main (void) {
// Vinci init
g = vinci_new();
// TODO: check for errors
// w1
struct window_cbs w1cbs;
memset(&w1cbs, 0, sizeof(window_cbs));
w1cbs.on_window_close = on_close;
w1cbs.on_mouse_press = on_mouse_press;
w1cbs.on_mouse_release = on_mouse_release;
w1cbs.on_mouse_move = on_mouse_move;
w1cbs.on_window_resize = on_window_resize;
w1 = window_new(g, NULL, 300, 500, &w1cbs);
on_window_resize(w1, window_get_width(w1), window_get_height(w1)); // This is needed for x only
window_show(w1);
// w2
struct window_cbs w2cbs;
memset(&w2cbs, 0, sizeof(window_cbs));
w2cbs.on_window_close = on_close;
w2cbs.on_mouse_press = on_mouse_press;
w2cbs.on_mouse_release = on_mouse_release;
w2cbs.on_mouse_move = on_mouse_move;
w2cbs.on_window_resize = on_window_resize;
w2 = window_new(g, NULL, 500, 500, &w2cbs);
on_window_resize(w2, window_get_width(w2), window_get_height(w2));
window_show(w2);
vinci_run(g, 0);
vinci_destroy(g);
}

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/*
* Vinci
*
* Copyright (C) 2025 Orastron Srl unipersonale
*
* Vinci is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* Vinci is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Vinci. If not, see <http://www.gnu.org/licenses/>.
*
* File author: Paolo Marrone, Stefano D'Angelo
*/
#include "vinci.h"
#include <stdlib.h>
#include <windows.h>
#include <stdio.h>
struct window {
vinci *g;
window *next;
HWND handle;
HBITMAP bitmap;
BITMAPINFOHEADER bitmap_info;
uint8_t *bgra;
char mouse_tracking;
void *data;
window_cbs cbs;
};
struct vinci {
char keep_running;
window *windows;
char className[20];
};
static uint32_t get_mouse_state(WPARAM wParam) {
return (wParam & (MK_LBUTTON | MK_RBUTTON)) | ((wParam & MK_MBUTTON) >> 2);
}
static LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) {
window *w = (window*) GetWindowLongPtrA(hwnd, 0);
if (w == NULL)
return DefWindowProc(hwnd, msg, wParam, lParam);
POINTS points;
switch(msg)
{
case WM_LBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_RBUTTONDOWN:
if (w->cbs.on_mouse_press) {
points = MAKEPOINTS(lParam);
SetCapture(hwnd);
w->cbs.on_mouse_press(w, points.x, points.y, get_mouse_state(wParam));
}
break;
case WM_LBUTTONUP:
case WM_MBUTTONUP:
case WM_RBUTTONUP:
if (w->cbs.on_mouse_release) {
points = MAKEPOINTS(lParam);
if (get_mouse_state(wParam) == 0) {
ReleaseCapture();
}
w->cbs.on_mouse_release(w, points.x, points.y, get_mouse_state(wParam));
}
break;
case WM_MOUSEMOVE:
points = MAKEPOINTS(lParam);
if (!w->mouse_tracking) {
if (w->cbs.on_mouse_enter)
w->cbs.on_mouse_enter(w, points.x, points.y, 1);
TRACKMOUSEEVENT tme;
tme.cbSize = sizeof(tme);
tme.hwndTrack = hwnd;
tme.dwFlags = TME_HOVER | TME_LEAVE;
tme.dwHoverTime = HOVER_DEFAULT;
TrackMouseEvent(&tme);
w->mouse_tracking = 1;
}
if (w->cbs.on_mouse_move)
w->cbs.on_mouse_move(w, points.x, points.y, get_mouse_state(wParam));
break;
case WM_MOUSELEAVE:
w->mouse_tracking = 0;
if (w->cbs.on_mouse_leave) {
points = MAKEPOINTS(lParam);
w->cbs.on_mouse_leave(w, points.x, points.y, get_mouse_state(wParam));
}
break;
case WM_KEYDOWN:
if (w->cbs.on_key_press)
w->cbs.on_key_press(w, wParam, 1);
break;
case WM_KEYUP:
if (w->cbs.on_key_release)
w->cbs.on_key_release(w, wParam, 1);
break;
case WM_SIZE:
{
const uint32_t width = LOWORD(lParam);
const uint32_t height = HIWORD(lParam);
DeleteObject(w->bitmap);
w->bitmap_info.biWidth = width;
w->bitmap_info.biHeight = -height;
HDC dc = GetDC(w->handle);
w->bitmap = CreateDIBSection(dc, (BITMAPINFO*)&w->bitmap_info, DIB_RGB_COLORS, (void **)&w->bgra, NULL, 0);
ReleaseDC(w->handle, dc);
if (w->cbs.on_window_resize)
w->cbs.on_window_resize(w, width, height);
}
break;
case WM_PAINT:
{
RECT cr;;
GetClientRect(w->handle, &cr);
RECT r;
if (GetUpdateRect(hwnd, &r, 0)) {
PAINTSTRUCT ps;
HDC dc = BeginPaint(hwnd, &ps);
SetDIBitsToDevice(dc, r.left, r.top, r.right - r.left, r.bottom - r.top, r.left, cr.bottom - cr.top - r.bottom, 0, -w->bitmap_info.biHeight, w->bgra, (BITMAPINFO*)&w->bitmap_info, DIB_RGB_COLORS);
EndPaint(hwnd, &ps);
}
}
break;
case WM_DESTROY:
{
if (w->cbs.on_window_close)
w->cbs.on_window_close(w);
}
break;
}
return DefWindowProc(hwnd, msg, wParam, lParam);
}
vinci* vinci_new(void) {
vinci *g = (vinci*)malloc(sizeof(vinci));
if (!g)
return NULL;
snprintf(g->className, 20, "vinClass%p", (void*)g); // Nice random name
WNDCLASSEX wc;
wc.cbSize = sizeof(WNDCLASSEX);
wc.style = 0;
wc.lpfnWndProc = WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = sizeof (window*); // To store window ptr into hwnd
wc.hInstance = NULL;
wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)(WHITE_BRUSH);
wc.lpszMenuName = NULL;
wc.lpszClassName = g->className;
wc.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
if (!RegisterClassEx(&wc)) {
free(g);
return NULL;
}
g->keep_running = 0;
g->windows = NULL;
return g;
}
void vinci_destroy(vinci *g) {
UnregisterClass(g->className, NULL);
free(g);
}
void vinci_run(vinci *g, char single) {
g->keep_running = 1;
MSG msg;
while (g->keep_running) {
if (single) {
BOOL b = PeekMessage(&msg, NULL, 0, 0, PM_REMOVE);
if (!b)
break;
} else {
BOOL b = GetMessage(&msg, NULL, 0, 0);
if (b <= 0)
break;
}
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
void vinci_stop(vinci *g) {
g->keep_running = 0;
}
window* window_new(vinci *g, void* parent, uint32_t width, uint32_t height, window_cbs *cbs) {
window *w = (window*)malloc(sizeof(window));
if (w == NULL)
return NULL;
w->g = g;
w->handle = CreateWindowEx(0, g->className, NULL, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, width, height, NULL, NULL, NULL, NULL);
if (w->handle == NULL) {
free(w);
return NULL;
}
SetWindowLongPtrW(w->handle, 0, (LONG_PTR) w);
ZeroMemory(&w->bitmap_info, sizeof(BITMAPINFOHEADER));
w->bitmap_info.biSize = sizeof(BITMAPINFOHEADER);
w->bitmap_info.biWidth = width;
w->bitmap_info.biHeight = -height;
w->bitmap_info.biPlanes = 1;
w->bitmap_info.biBitCount = 32;
w->bitmap_info.biCompression = BI_RGB;
HDC dc = GetDC(w->handle);
w->bitmap = CreateDIBSection(dc, (BITMAPINFO*)&w->bitmap_info, DIB_RGB_COLORS, (void **)&w->bgra, NULL, 0);
ReleaseDC(w->handle, dc);
if (w->bitmap == NULL) {
DestroyWindow(w->handle);
free(w);
return NULL;
}
if (parent) {
SetParent(w->handle, *((HWND *)parent));
SetWindowLong(w->handle, GWL_STYLE, GetWindowLong(w->handle, GWL_STYLE) & ~(WS_BORDER | WS_SIZEBOX | WS_DLGFRAME));
SetWindowPos(w->handle, HWND_TOP, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED); // SWP_FRAMECHANGED triggers WndProc call with WM_SIZE right here. May they die hard
}
w->next = NULL;
if (g->windows == NULL)
g->windows = w;
else {
window *n = g->windows;
while (n->next)
n = n->next;
n->next = w;
}
TRACKMOUSEEVENT tme;
tme.cbSize = sizeof(TRACKMOUSEEVENT);
tme.dwFlags = TME_LEAVE;
tme.hwndTrack = w->handle;
TrackMouseEvent(&tme);
w->mouse_tracking = 1;
w->data = NULL;
w->cbs = *cbs;
UpdateWindow(w->handle);
return w;
}
void window_free(window *w) {
if (w->g->windows == w)
w->g->windows = w->next;
else {
window *n = w->g->windows;
while (n->next != w)
n = n->next;
n->next = w->next;
}
DeleteObject(w->bitmap);
//DestroyWindow(w->handle); // This calls WM_DESTROY. So this should used to actively close a window, not as a cb
free(w);
}
static inline int mini(int a, int b) {
return a < b ? a : b;
}
static inline int maxi(int a, int b) {
return a > b ? a : b;
}
void window_draw(window *w, unsigned char *data, int32_t dx, int32_t dy, int32_t dw, int32_t dh, int32_t wx, int32_t wy, int32_t width, int32_t height) {
(void) dh;
RECT cr;
GetClientRect(w->handle, &cr);
const int wx_ = maxi(wx, cr.left);
const int wy_ = maxi(wy, cr.top);
const int width_ = mini(width - (wx_ - wx), cr.right - wx);
const int height_ = mini(height - (wy_ - wy), cr.bottom - wy);
if (width_ <= 0 || height_ <= 0 )
return;
dx = dx + (wx_ - wx);
dy = dy + (wy_ - wy);
wx = wx_;
wy = wy_;
width = width_;
height = height_;
uint32_t *src = ((uint32_t *)data) + dw * dy + dx;
uint32_t *dest = ((uint32_t *)w->bgra) + w->bitmap_info.biWidth * wy + wx;
for (uint32_t h = height; h; h--, src += dw, dest += w->bitmap_info.biWidth) {
//memcpy(dest, src, 4 * width);
for (int32_t x = 0; x < width; x++) // TODO: BIG ENDIAN AND LITTLEENDIAN IFDEF
dest[x] = ((src[x] >> 16) & 0x00000000ff) | ((src[x]) & 0x0000ff00) | ((src[x] << 16) & 0x00ff0000);
}
RECT r = {
wx, // left
wy, // top
wx + width, // right
wy + height // bottom
};
RedrawWindow(w->handle, &r, NULL, RDW_INVALIDATE | RDW_UPDATENOW);
}
void window_resize(window *w, uint32_t width, uint32_t height) {
SetWindowPos(w->handle, NULL, 0, 0, width, height, SWP_NOMOVE | SWP_NOZORDER);
}
void window_move(window *w, uint32_t x, uint32_t y) {
SetWindowPos(w->handle, NULL, x, y, 0, 0, SWP_NOSIZE | SWP_NOZORDER);
}
uint32_t window_get_width(window *w) {
RECT r;
GetClientRect(w->handle, &r);
return r.right - r.left;
}
uint32_t window_get_height(window *w) {
RECT r;
GetClientRect(w->handle, &r);
return r.bottom - r.top;
}
void *window_get_handle(window *w) {
return w->handle;
}
void window_show(window *w) {
ShowWindow(w->handle, SW_SHOW);
}
void window_hide(window *w) {
ShowWindow(w->handle, SW_HIDE);
}
void window_set_data(window *w, void *data) {
w->data = data;
}
void *window_get_data(window *w) {
return w->data;
}

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/*
* Vinci
*
* Copyright (C) 2025 Orastron Srl unipersonale
*
* Vinci is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* Vinci is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Vinci. If not, see <http://www.gnu.org/licenses/>.
*
* File author: Stefano D'Angelo, Paolo Marrone
*/
#include "vinci.h"
#include <stdlib.h>
#include <xcb/xcb.h>
#include <poll.h>
#include <stdio.h>
struct window {
vinci *g;
window *next;
xcb_window_t window;
xcb_pixmap_t pixmap;
xcb_gcontext_t gc;
uint16_t x;
uint16_t y;
uint16_t width;
uint16_t height;
void *bgra;
void *data;
window_cbs cbs;
};
struct vinci {
xcb_connection_t *connection;
xcb_screen_t *screen;
const xcb_setup_t *setup;
xcb_visualtype_t *visual;
xcb_atom_t wm_protocols_atom;
xcb_atom_t wm_delete_atom;
xcb_atom_t xembed_info_atom;
window *windows;
char keep_running;
};
vinci* vinci_new(void) {
vinci* g = (vinci*) malloc(sizeof(vinci));
if (g == NULL)
return NULL;
g->connection = xcb_connect(NULL, NULL);
if (xcb_connection_has_error(g->connection)) {
xcb_disconnect(g->connection);
return NULL;
}
g->screen = xcb_setup_roots_iterator(xcb_get_setup(g->connection)).data;
g->setup = xcb_get_setup(g->connection);
xcb_visualtype_iterator_t visual_iter; xcb_intern_atom_reply_t* reply; // stupid C++ and its cross-initialization issues...
xcb_depth_iterator_t depth_iter = xcb_screen_allowed_depths_iterator(g->screen);
xcb_depth_t *depth = NULL;
while (depth_iter.rem) {
if (depth_iter.data->depth == 24 && depth_iter.data->visuals_len) {
depth = depth_iter.data;
break;
}
xcb_depth_next(&depth_iter);
}
if (!depth)
goto err;
visual_iter = xcb_depth_visuals_iterator(depth);
g->visual = NULL;
while (visual_iter.rem) {
if (visual_iter.data->_class == XCB_VISUAL_CLASS_TRUE_COLOR) {
g->visual = visual_iter.data;
break;
}
xcb_visualtype_next(&visual_iter);
}
if (!g->visual)
goto err;
reply = xcb_intern_atom_reply(g->connection, xcb_intern_atom(g->connection, 1, 12, "WM_PROTOCOLS"), NULL);
if (!reply)
goto err;
g->wm_protocols_atom = reply->atom;
free(reply);
reply = xcb_intern_atom_reply(g->connection, xcb_intern_atom(g->connection, 0, 16, "WM_DELETE_WINDOW"), NULL);
if (!reply)
goto err;
g->wm_delete_atom = reply->atom;
free(reply);
reply = xcb_intern_atom_reply(g->connection, xcb_intern_atom(g->connection, 0, 12, "_XEMBED_INFO"), NULL);
if (!reply)
goto err;
g->xembed_info_atom = reply->atom;
free(reply);
g->windows = NULL;
return g;
err:
free(g);
return NULL;
}
void vinci_destroy(vinci* g) {
xcb_disconnect(g->connection);
free(g);
}
static window* get_window(vinci* g, xcb_window_t xw) {
window* w = g->windows;
while (w->window != xw)
w = (window*)w->next;
return w;
}
static uint32_t get_mouse_state(uint16_t state, xcb_button_t last) {
return (
(state & XCB_BUTTON_MASK_1) >> 8
| (state & XCB_BUTTON_MASK_2) >> 7
| (state & XCB_BUTTON_MASK_3) >> 9 )
^ (last == 1 ? 1 : (last == 2 ? 4 : (last == 3 ? 2 : 0)))
;
}
void vinci_run(vinci* g, char single) {
g->keep_running = 1;
xcb_generic_event_t *ev;
struct pollfd pfd;
pfd.fd = xcb_get_file_descriptor(g->connection);
pfd.events = POLLIN;
while (g->keep_running) {
int err = poll(&pfd, 1, single ? 0 : -1);
if (err == -1)
break;
else if (err == 0 && single)
break;
while (g->keep_running && (ev = xcb_poll_for_event(g->connection))) {
switch (ev->response_type & ~0x80) {
case XCB_EXPOSE:
{
xcb_expose_event_t *x = (xcb_expose_event_t *)ev;
window* w = get_window(g, x->window);
xcb_copy_area(g->connection, w->pixmap, w->window, w->gc, x->x, x->y, x->x, x->y, x->width, x->height);
xcb_flush(g->connection);
}
break;
case XCB_CONFIGURE_NOTIFY:
{
xcb_configure_notify_event_t *x = (xcb_configure_notify_event_t *)ev;
window* w = get_window(g, x->window);
xcb_translate_coordinates_reply_t *trans =
xcb_translate_coordinates_reply(g->connection, xcb_translate_coordinates(g->connection, w->window, g->screen->root, 0, 0), NULL);
if (trans) {
if (trans->dst_x != w->x || trans->dst_y != w->y) {
w->x = trans->dst_x;
w->y = trans->dst_y;
if (w->cbs.on_window_move)
w->cbs.on_window_move(w, trans->dst_x, trans->dst_y);
}
free(trans);
}
if (x->width != w->width || x->height != w->height) {
w->width = x->width;
w->height = x->height;
xcb_free_pixmap(g->connection, w->pixmap);
w->pixmap = xcb_generate_id(g->connection);
xcb_create_pixmap(g->connection, g->screen->root_depth, w->pixmap, w->window, x->width, x->height);
w->bgra = (uint8_t*) realloc(w->bgra, (w->width * w->height) << 2);
if (w->cbs.on_window_resize)
w->cbs.on_window_resize(w, x->width, x->height);
}
}
break;
case XCB_CLIENT_MESSAGE:
{
xcb_client_message_event_t *x = (xcb_client_message_event_t *)ev;
window* w = get_window(g, x->window);
if (w->cbs.on_window_close) {
if (x->data.data32[0] == g->wm_delete_atom)
w->cbs.on_window_close(w);
}
}
break;
case XCB_BUTTON_PRESS:
{
xcb_button_press_event_t *x = (xcb_button_press_event_t *)ev;
window* w = get_window(g, x->event);
// First three buttons
if (w->cbs.on_mouse_press) {
if (x->detail <= 3)
w->cbs.on_mouse_press(w, x->event_x, x->event_y, get_mouse_state(x->state, x->detail));
}
// wheel
if (w->cbs.on_mouse_wheel) {
if (x->detail == 4)
w->cbs.on_mouse_wheel(w, x->event_x, x->event_y, 57);
else if (x->detail == 5)
w->cbs.on_mouse_wheel(w, x->event_x, x->event_y, -57);
}
}
break;
case XCB_BUTTON_RELEASE:
{
xcb_button_release_event_t *x = (xcb_button_release_event_t *)ev;
window* w = get_window(g, x->event);
// First three buttons
if (x->detail <= 3) {
if (w->cbs.on_mouse_release)
w->cbs.on_mouse_release(w, x->event_x, x->event_y, get_mouse_state(x->state, x->detail));
}
// Mouse wheel
else {
// Nothing to do
}
}
break;
case XCB_MOTION_NOTIFY:
{
xcb_motion_notify_event_t *x = (xcb_motion_notify_event_t *)ev;
window* w = get_window(g, x->event);
if (w->cbs.on_mouse_move)
w->cbs.on_mouse_move(w, x->event_x, x->event_y, get_mouse_state(x->state, 0));
}
break;
case XCB_ENTER_NOTIFY:
{
xcb_enter_notify_event_t *x = (xcb_enter_notify_event_t *)ev;
window* w = get_window(g, x->event);
if (w->cbs.on_mouse_enter)
w->cbs.on_mouse_enter(w, x->event_x, x->event_y, get_mouse_state(x->state, 0));
}
break;
case XCB_LEAVE_NOTIFY:
{
xcb_leave_notify_event_t *x = (xcb_leave_notify_event_t *)ev;
window* w = get_window(g, x->event);
if (w->cbs.on_mouse_leave)
w->cbs.on_mouse_leave(w, x->event_x, x->event_y, get_mouse_state(x->state, 0));
}
break;
case XCB_KEY_PRESS:
{
xcb_key_press_event_t *x = (xcb_key_press_event_t *)ev;
window* w = get_window(g, x->event);
if (w->cbs.on_key_press)
w->cbs.on_key_press(w, x->detail, x->state);
}
break;
case XCB_KEY_RELEASE:
{
xcb_key_release_event_t *x = (xcb_key_release_event_t *)ev;
window* w = get_window(g, x->event);
if (w->cbs.on_key_release)
w->cbs.on_key_release(w, x->detail, x->state);
}
break;
default:
break;
}
free(ev);
}
}
}
void vinci_stop(vinci* g) {
g->keep_running = 0;
}
#define XEMBED_MAPPED (1 << 0)
window* window_new(vinci* g, void* p, uint32_t width, uint32_t height, window_cbs *cbs) {
xcb_window_t *parent = (xcb_window_t *) p;
window* ret = (window*) malloc(sizeof(window));
if (ret == NULL)
return NULL;
ret->bgra = malloc((width * height) << 2);
if (!ret->bgra) {
free(ret);
return NULL;
}
ret->window = xcb_generate_id(g->connection);
uint32_t mask = XCB_CW_EVENT_MASK;
uint32_t values[] = { XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_STRUCTURE_NOTIFY
| XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE
| XCB_EVENT_MASK_POINTER_MOTION | XCB_EVENT_MASK_BUTTON_MOTION
| XCB_EVENT_MASK_ENTER_WINDOW | XCB_EVENT_MASK_LEAVE_WINDOW
| XCB_EVENT_MASK_KEY_PRESS | XCB_EVENT_MASK_KEY_RELEASE };
xcb_create_window(g->connection, 24, ret->window, parent ? *parent : g->screen->root,
0, 0, width, height, 0, XCB_WINDOW_CLASS_INPUT_OUTPUT,
g->visual->visual_id, mask, values);
ret->pixmap = xcb_generate_id(g->connection);
xcb_create_pixmap(g->connection, g->screen->root_depth, ret->pixmap, ret->window, width, height);
ret->gc = xcb_generate_id(g->connection);
xcb_create_gc(g->connection, ret->gc, ret->pixmap, 0, NULL);
uint32_t xembed_info[] = { 0, 0 };
xcb_change_property(g->connection, XCB_PROP_MODE_REPLACE, ret->window, g->xembed_info_atom, g->xembed_info_atom, 32, 2, xembed_info);
// Subscribe to window close events
xcb_change_property(g->connection, XCB_PROP_MODE_REPLACE, ret->window, g->wm_protocols_atom, XCB_ATOM_ATOM, 32, 1, &(g->wm_delete_atom));
xcb_flush(g->connection);
ret->next = NULL;
if (g->windows == NULL)
g->windows = ret;
else {
window* n = g->windows;
while (n->next)
n = (window*) n->next;
n->next = ret;
}
ret->g = g;
ret->x = 0;
ret->y = 0;
ret->width = width;
ret->height = height;
ret->data = NULL;
ret->cbs = *cbs;
return ret;
}
void window_free(window* w) {
if (w->g->windows == w)
w->g->windows = w->next;
else {
window* n = w->g->windows;
while ((window*) n->next != w)
n = (window*) n->next;
n->next = w->next;
}
xcb_free_gc(w->g->connection, w->gc);
xcb_free_pixmap(w->g->connection, w->pixmap);
xcb_destroy_window(w->g->connection, w->window);
xcb_flush(w->g->connection);
free(w->bgra);
free(w);
}
void window_draw(window* w, unsigned char *data, int32_t dx, int32_t dy, int32_t dw, int32_t dh, int32_t wx, int32_t wy, int32_t width, int32_t height) {
const int32_t wx_ = wx < 0 ? 0 : wx;
const int32_t wy_ = wy < 0 ? 0 : wy;
width = width - (wx_ - wx);
height = height - (wy_ - wy);
if (width <= 0 || height <= 0 )
return;
dx = dx + (wx_ - wx);
dy = dy + (wy_ - wy);
wx = wx_;
wy = wy_;
uint8_t *bgra = (uint8_t*) w->bgra;
int32_t i = 0;
int32_t o = (dw * dy + dx) << 2;
int32_t p = (dw - width) << 2;
if (w->g->setup->image_byte_order == XCB_IMAGE_ORDER_LSB_FIRST) {
for (int32_t y = dy; y < dy + height && y < dh; y++) {
for (int32_t x = dx; x < dx + width; x++, o += 4) {
bgra[i++] = data[o + 2];
bgra[i++] = data[o + 1];
bgra[i++] = data[o ];
i++;
}
o += p;
}
} else {
for (int32_t y = dy; y < dy + height; y++) {
for (int32_t x = dx; x < dx + width; x++, o += 4) {
bgra[i++] = data[o ];
bgra[i++] = data[o + 1];
bgra[i++] = data[o + 2];
i++;
}
o += p;
}
}
const uint32_t bytes = (width * height) << 2;
xcb_put_image(w->g->connection, XCB_IMAGE_FORMAT_Z_PIXMAP, w->pixmap, w->gc, width, height, wx, wy, 0, w->g->screen->root_depth, bytes, bgra);
xcb_copy_area(w->g->connection, w->pixmap, w->window, w->gc, wx, wy, wx, wy, width, height);
xcb_flush(w->g->connection);
}
void *window_get_handle(window* w) {
return &w->window;
}
uint32_t window_get_width(window* w) {
return w->width;
}
uint32_t window_get_height(window* w) {
return w->height;
}
/*
// In case we need to get w and h from x:
xcb_get_geometry_cookie_t geom_cookie = xcb_get_geometry(w->g->connection, w->window);
xcb_get_geometry_reply_t *cr = xcb_get_geometry_reply(w->g->connection, geom_cookie, NULL);
cr->width; cr->height;
*/
void window_resize(window* w, uint32_t width, uint32_t height) {
const uint32_t values[] = { width, height };
xcb_configure_window(w->g->connection, w->window, XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT, values);
xcb_clear_area(w->g->connection, 1, w->window, 0, 0, width, height);
xcb_flush(w->g->connection);
}
void window_move (window* w, uint32_t x, uint32_t y) {
(void) x;
(void) y;
const uint32_t values[] = { w->width, w->height };
xcb_configure_window(w->g->connection, w->window, XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y, values);
xcb_flush(w->g->connection);
}
void window_show(window* w) {
uint32_t xembed_info[] = { 0, XEMBED_MAPPED };
xcb_change_property(w->g->connection, XCB_PROP_MODE_REPLACE, w->window, w->g->xembed_info_atom, w->g->xembed_info_atom, 32, 2, xembed_info);
xcb_map_window(w->g->connection, w->window);
xcb_flush(w->g->connection);
}
void window_hide(window* w) {
uint32_t xembed_info[] = { 0, 0 };
xcb_change_property(w->g->connection, XCB_PROP_MODE_REPLACE, w->window, w->g->xembed_info_atom, w->g->xembed_info_atom, 32, 2, xembed_info);
xcb_unmap_window(w->g->connection, w->window);
xcb_flush(w->g->connection);
}
void window_set_data(window* w, void *data) {
w->data = data;
}
void *window_get_data(window* w) {
return w->data;
}

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/*
* Vinci
*
* Copyright (C) 2025 Orastron Srl unipersonale
*
* Vinci is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* Vinci is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Vinci. If not, see <http://www.gnu.org/licenses/>.
*
* File author: Paolo Marrone
*/
#ifndef VINCI_H
#define VINCI_H
#include <stdint.h>
typedef struct vinci vinci;
typedef struct window window;
typedef struct window_cbs {
void (*on_window_resize) (window *w, int32_t width, int32_t height);
void (*on_window_close) (window *w);
void (*on_window_move) (window *w, uint32_t x, uint32_t y);
void (*on_mouse_move) (window *w, int32_t x, int32_t y, uint32_t state);
void (*on_mouse_press) (window *w, int32_t x, int32_t y, uint32_t state);
void (*on_mouse_release) (window *w, int32_t x, int32_t y, uint32_t state);
void (*on_mouse_wheel) (window *w, int32_t x, int32_t y, uint32_t state);
void (*on_mouse_enter) (window *w, int32_t x, int32_t y, uint32_t state);
void (*on_mouse_leave) (window *w, int32_t x, int32_t y, uint32_t state);
void (*on_key_press) (window *w, uint32_t keycode, uint32_t state);
void (*on_key_release) (window *w, uint32_t keycode, uint32_t state);
} window_cbs;
vinci* vinci_new (void);
void vinci_destroy (vinci *g);
void vinci_run (vinci *g, char single);
void vinci_stop (vinci *g);
window* window_new (vinci *g, void* p, uint32_t width, uint32_t height, window_cbs *cbs);
void window_free (window *w);
void window_draw (window *w, unsigned char *data, int32_t dx, int32_t dy, int32_t dw, int32_t dh, int32_t wx, int32_t wy, int32_t width, int32_t height);
void* window_get_handle(window *w);
uint32_t window_get_width (window *w); // Internal: excluding title etc
uint32_t window_get_height(window *w); // ^
void window_resize (window *w, uint32_t width, uint32_t height);
void window_move (window *w, uint32_t x, uint32_t y);
void window_show (window *w);
void window_hide (window *w);
void window_set_data (window *w, void *data);
void* window_get_data (window *w);
#endif