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mfb_update_events (#27)

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* update documentation

* Fix typo

* Added some examples

* changed window names

* Minor fix

* Added mfb_update_events to all platforms. Checked on Windows, X11 and Wayland
This commit is contained in:
Carlos Aragonés 2019-12-14 11:20:59 +01:00 committed by Daniel Collin
parent cdaa54f5d6
commit 0257a60419
7 changed files with 181 additions and 83 deletions
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2
CMakeLists.txt
View File

@ -18,7 +18,7 @@ file(GLOB SrcWayland "src/wayland/*.c")
file(GLOB SrcX11 "src/x11/*.c")
if (NOT MSVC)
set (CMAKE_C_FLAGS "-g -Wall -Wextra -pedantic -Wno-switch -Wno-unused-function")
set (CMAKE_C_FLAGS "-g -Wall -Wextra -pedantic -Wno-switch -Wno-unused-function -Wno-implicit-fallthrough")
set (CMAKE_CXX_FLAGS "${CMAKE_C_FLAGS} -std=c++11")
set (CMAKE_OBJC_FLAGS "${CMAKE_C_FLAGS}")
set (CMAKE_OBJCXX_FLAGS "${CMAKE_CXX_FLAGS}")

9
include/MiniFB.h
View File

@ -17,10 +17,15 @@ extern "C" {
struct Window * mfb_open(const char *title, unsigned width, unsigned height);
struct Window * mfb_open_ex(const char *title, unsigned width, unsigned height, unsigned flags);
// Update the display. Input buffer is assumed to be a 32-bit buffer of the size given in the open call
// Will return a negative status if something went wrong or the user want to exit.
// Update the display
// Input buffer is assumed to be a 32-bit buffer of the size given in the open call
// Will return a negative status if something went wrong or the user want to exit
// Also updates the window events
UpdateState mfb_update(struct Window *window, void *buffer);
// Only updates the window events
UpdateState mfb_update_events(struct Window *window);
// Close the window
void mfb_close(struct Window *window);

23
src/macosx/MacMiniFB.m
View File

@ -345,6 +345,29 @@ UpdateState mfb_update(struct Window *window, void *buffer)
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
UpdateState mfb_update_events(struct Window *window)
{
if(window == 0x0) {
return STATE_INVALID_WINDOW;
}
SWindowData *window_data = (SWindowData *) window;
if(window_data->close) {
destroy_window_data(window_data);
return STATE_EXIT;
}
update_events(window_data);
if(window_data->close == false) {
SWindowData_OSX *window_data_osx = (SWindowData_OSX *) window_data->specific;
[[window_data_osx->window contentView] setNeedsDisplay:YES];
}
return STATE_OK;
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
bool mfb_set_viewport(struct Window *window, unsigned offset_x, unsigned offset_y, unsigned width, unsigned height)
{
SWindowData *window_data = (SWindowData *) window;

29
src/wayland/WaylandMiniFB.c
View File

@ -718,8 +718,7 @@ mfb_update(struct Window *window, void *buffer)
wl_surface_commit(window_data_way->surface);
while (!done && window_data->close == false) {
if (wl_display_dispatch(window_data_way->display) == -1 || wl_display_roundtrip(window_data_way->display) == -1)
{
if (wl_display_dispatch(window_data_way->display) == -1 || wl_display_roundtrip(window_data_way->display) == -1) {
wl_callback_destroy(frame_callback);
return STATE_INTERNAL_ERROR;
}
@ -730,6 +729,32 @@ mfb_update(struct Window *window, void *buffer)
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
UpdateState
mfb_update_events(struct Window *window)
{
if(window == 0x0) {
return STATE_INVALID_WINDOW;
}
SWindowData *window_data = (SWindowData *) window;
if(window_data->close) {
destroy(window_data);
return STATE_EXIT;
}
SWindowData_Way *window_data_way = (SWindowData_Way *) window_data->specific;
if (!window_data_way->display || wl_display_get_error(window_data_way->display) != 0)
return STATE_INTERNAL_ERROR;
if (wl_display_dispatch(window_data_way->display) == -1 || wl_display_roundtrip(window_data_way->display) == -1) {
return STATE_INTERNAL_ERROR;
}
return STATE_OK;
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
extern short int g_keycodes[512];
void

93
src/windows/WinMiniFB.c
View File

@ -15,13 +15,12 @@ uint32_t translate_mod();
Key translate_key(unsigned int wParam, unsigned long lParam);
void destroy_window_data(SWindowData *window_data);
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {
LRESULT res = 0;
SWindowData *window_data = (SWindowData *) GetWindowLongPtr(hWnd, GWLP_USERDATA);
SWindowData_Win *window_data_win = 0x0;
if(window_data != 0x0) {
if (window_data != 0x0) {
window_data_win = (SWindowData_Win *) window_data->specific;
}
@ -31,18 +30,18 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
if (window_data && window_data->draw_buffer && window_data_win)
{
//if(window_data->dst_offset_x > 0) {
//if (window_data->dst_offset_x > 0) {
// BitBlt(window_data_win->hdc, 0, window_data->dst_offset_y, window_data->dst_offset_x, window_data->dst_height, 0, 0, 0, BLACKNESS);
//}
//if(window_data->dst_offset_y > 0) {
//if (window_data->dst_offset_y > 0) {
// BitBlt(window_data_win->hdc, 0, 0, window_data->window_width, window_data->dst_offset_y, 0, 0, 0, BLACKNESS);
//}
//uint32_t offsetY = window_data->dst_offset_y + window_data->dst_height;
//if(offsetY < window_data->window_height) {
//if (offsetY < window_data->window_height) {
// BitBlt(window_data_win->hdc, 0, offsetY, window_data->window_width, window_data->window_height - offsetY, 0, 0, 0, BLACKNESS);
//}
//uint32_t offsetX = window_data->dst_offset_x + window_data->dst_width;
//if(offsetX < window_data->window_width) {
//if (offsetX < window_data->window_width) {
// BitBlt(window_data_win->hdc, offsetX, window_data->dst_offset_y, window_data->window_width - offsetX, window_data->dst_height, 0, 0, 0, BLACKNESS);
//}
@ -58,7 +57,7 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
case WM_DESTROY:
case WM_CLOSE:
{
if(window_data) {
if (window_data) {
window_data->close = true;
}
break;
@ -69,7 +68,7 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
case WM_KEYUP:
case WM_SYSKEYUP:
{
if(window_data) {
if (window_data) {
Key key_code = translate_key((unsigned int)wParam, (unsigned long)lParam);
int is_pressed = !((lParam >> 31) & 1);
window_data->mod_keys = translate_mod();
@ -88,14 +87,14 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
case WM_UNICHAR:
{
if(window_data) {
if(message == WM_UNICHAR && wParam == UNICODE_NOCHAR) {
if (window_data) {
if (message == WM_UNICHAR && wParam == UNICODE_NOCHAR) {
// WM_UNICHAR is not sent by Windows, but is sent by some third-party input method engine
// Returning TRUE here announces support for this message
return TRUE;
}
kCall(char_input_func, wParam);
kCall(char_input_func, (unsigned int) wParam);
}
break;
}
@ -113,7 +112,7 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
case WM_XBUTTONDOWN:
case WM_XBUTTONDBLCLK:
{
if(window_data) {
if (window_data) {
MouseButton button = MOUSE_BTN_0;
window_data->mod_keys = translate_mod();
int is_pressed = 0;
@ -136,7 +135,7 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
default:
button = (GET_XBUTTON_WPARAM(wParam) == XBUTTON1 ? MOUSE_BTN_5 : MOUSE_BTN_6);
if(message == WM_XBUTTONDOWN) {
if (message == WM_XBUTTONDOWN) {
is_pressed = 1;
}
}
@ -146,7 +145,7 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
}
case WM_MOUSEWHEEL:
if(window_data) {
if (window_data) {
kCall(mouse_wheel_func, translate_mod(), 0.0f, (SHORT)HIWORD(wParam) / (float)WHEEL_DELTA);
}
break;
@ -154,14 +153,14 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
case WM_MOUSEHWHEEL:
// This message is only sent on Windows Vista and later
// NOTE: The X-axis is inverted for consistency with macOS and X11
if(window_data) {
if (window_data) {
kCall(mouse_wheel_func, translate_mod(), -((SHORT)HIWORD(wParam) / (float)WHEEL_DELTA), 0.0f);
}
break;
case WM_MOUSEMOVE:
if(window_data) {
if(window_data_win->mouse_inside == false) {
if (window_data) {
if (window_data_win->mouse_inside == false) {
window_data_win->mouse_inside = true;
TRACKMOUSEEVENT tme;
ZeroMemory(&tme, sizeof(tme));
@ -177,13 +176,13 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
break;
case WM_MOUSELEAVE:
if(window_data) {
if (window_data) {
window_data_win->mouse_inside = false;
}
break;
case WM_SIZE:
if(window_data) {
if (window_data) {
window_data->dst_offset_x = 0;
window_data->dst_offset_y = 0;
window_data->dst_width = LOWORD(lParam);
@ -196,14 +195,14 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
break;
case WM_SETFOCUS:
if(window_data) {
if (window_data) {
window_data->is_active = true;
kCall(active_func, true);
}
break;
case WM_KILLFOCUS:
if(window_data) {
if (window_data) {
window_data->is_active = false;
kCall(active_func, false);
}
@ -358,21 +357,20 @@ struct Window *mfb_open(const char *title, unsigned width, unsigned height) {
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
UpdateState mfb_update(struct Window *window, void *buffer)
{
UpdateState mfb_update(struct Window *window, void *buffer) {
MSG msg;
if(window == 0x0) {
if (window == 0x0) {
return STATE_INVALID_WINDOW;
}
SWindowData *window_data = (SWindowData *)window;
if(window_data->close) {
if (window_data->close) {
destroy_window_data(window_data);
return STATE_EXIT;
}
if(buffer == 0x0) {
if (buffer == 0x0) {
return STATE_INVALID_BUFFER;
}
@ -382,8 +380,31 @@ UpdateState mfb_update(struct Window *window, void *buffer)
InvalidateRect(window_data_win->window, 0x0, TRUE);
SendMessage(window_data_win->window, WM_PAINT, 0, 0);
while (window_data->close == false && PeekMessage(&msg, window_data_win->window, 0, 0, PM_REMOVE))
{
while (window_data->close == false && PeekMessage(&msg, window_data_win->window, 0, 0, PM_REMOVE)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return STATE_OK;
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
UpdateState mfb_update_events(struct Window *window) {
MSG msg;
if (window == 0x0) {
return STATE_INVALID_WINDOW;
}
SWindowData *window_data = (SWindowData *)window;
if (window_data->close) {
destroy_window_data(window_data);
return STATE_EXIT;
}
SWindowData_Win *window_data_win = (SWindowData_Win *) window_data->specific;
while (window_data->close == false && PeekMessage(&msg, window_data_win->window, 0, 0, PM_REMOVE)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
@ -394,16 +415,17 @@ UpdateState mfb_update(struct Window *window, void *buffer)
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void destroy_window_data(SWindowData *window_data) {
if(window_data == 0x0)
if (window_data == 0x0)
return;
SWindowData_Win *window_data_win = (SWindowData_Win *) window_data->specific;
window_data->draw_buffer = 0x0;
if(window_data_win->bitmapInfo != 0x0) {
if (window_data_win->bitmapInfo != 0x0) {
free(window_data_win->bitmapInfo);
}
if(window_data_win->window != 0 && window_data_win->hdc != 0) {
if (window_data_win->window != 0 && window_data_win->hdc != 0) {
ReleaseDC(window_data_win->window, window_data_win->hdc);
DestroyWindow(window_data_win->window);
}
@ -595,14 +617,13 @@ Key translate_key(unsigned int wParam, unsigned long lParam) {
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
bool mfb_set_viewport(struct Window *window, unsigned offset_x, unsigned offset_y, unsigned width, unsigned height)
{
bool mfb_set_viewport(struct Window *window, unsigned offset_x, unsigned offset_y, unsigned width, unsigned height) {
SWindowData *window_data = (SWindowData *) window;
if(offset_x + width > window_data->window_width) {
if (offset_x + width > window_data->window_width) {
return false;
}
if(offset_y + height > window_data->window_height) {
if (offset_y + height > window_data->window_height) {
return false;
}

74
src/x11/X11MiniFB.c
View File

@ -157,7 +157,7 @@ mfb_open_ex(const char *title, unsigned width, unsigned height, unsigned flags)
sizeHints.y = 0;
sizeHints.min_width = width;
sizeHints.min_height = height;
if(flags & WF_RESIZABLE) {
if (flags & WF_RESIZABLE) {
sizeHints.max_width = screenWidth;
sizeHints.max_height = screenHeight;
}
@ -183,8 +183,7 @@ mfb_open_ex(const char *title, unsigned width, unsigned height, unsigned flags)
}
struct Window *
mfb_open(const char *title, unsigned width, unsigned height)
{
mfb_open(const char *title, unsigned width, unsigned height) {
return mfb_open_ex(title, width, height, 0);
}
@ -194,8 +193,7 @@ int translate_key(int scancode);
int translate_mod(int state);
int translate_mod_ex(int key, int state, int is_pressed);
static void processEvents(SWindowData *window_data)
{
static void processEvents(SWindowData *window_data) {
XEvent event;
SWindowData_X11 *window_data_x11 = (SWindowData_X11 *) window_data->specific;
@ -295,31 +293,30 @@ static void processEvents(SWindowData *window_data)
void destroy(SWindowData *window_data);
UpdateState mfb_update(struct Window *window, void *buffer)
{
if(window == 0x0) {
UpdateState mfb_update(struct Window *window, void *buffer) {
if (window == 0x0) {
return STATE_INVALID_WINDOW;
}
SWindowData *window_data = (SWindowData *) window;
if(window_data->close) {
if (window_data->close) {
destroy(window_data);
return STATE_EXIT;
}
if(buffer == 0x0) {
if (buffer == 0x0) {
return STATE_INVALID_BUFFER;
}
SWindowData_X11 *window_data_x11 = (SWindowData_X11 *) window_data->specific;
if (window_data->buffer_width != window_data->dst_width || window_data->buffer_height != window_data->dst_height) {
if(window_data_x11->image_scaler_width != window_data->dst_width || window_data_x11->image_scaler_height != window_data->dst_height) {
if(window_data_x11->image_scaler != 0x0) {
if (window_data_x11->image_scaler_width != window_data->dst_width || window_data_x11->image_scaler_height != window_data->dst_height) {
if (window_data_x11->image_scaler != 0x0) {
window_data_x11->image_scaler->data = 0x0;
XDestroyImage(window_data_x11->image_scaler);
}
if(window_data_x11->image_buffer != 0x0) {
if (window_data_x11->image_buffer != 0x0) {
free(window_data_x11->image_buffer);
window_data_x11->image_buffer = 0x0;
}
@ -331,7 +328,7 @@ UpdateState mfb_update(struct Window *window, void *buffer)
}
}
if(window_data_x11->image_scaler != 0x0) {
if (window_data_x11->image_scaler != 0x0) {
stretch_image((uint32_t *) buffer, 0, 0, window_data->buffer_width, window_data->buffer_height, window_data->buffer_width, (uint32_t *) window_data_x11->image_buffer, 0, 0, window_data->dst_width, window_data->dst_height, window_data->dst_width);
window_data_x11->image_scaler->data = (char *) window_data_x11->image_buffer;
XPutImage(window_data_x11->display, window_data_x11->window, window_data_x11->gc, window_data_x11->image_scaler, 0, 0, window_data->dst_offset_x, window_data->dst_offset_y, window_data->dst_width, window_data->dst_height);
@ -348,12 +345,31 @@ UpdateState mfb_update(struct Window *window, void *buffer)
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void destroy(SWindowData *window_data)
{
if(window_data != 0x0) {
if(window_data->specific != 0x0) {
UpdateState mfb_update_events(struct Window *window) {
if (window == 0x0) {
return STATE_INVALID_WINDOW;
}
SWindowData *window_data = (SWindowData *) window;
if (window_data->close) {
destroy(window_data);
return STATE_EXIT;
}
SWindowData_X11 *window_data_x11 = (SWindowData_X11 *) window_data->specific;
if(window_data_x11->image != 0x0) {
XFlush(window_data_x11->display);
processEvents(window_data);
return STATE_OK;
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void destroy(SWindowData *window_data) {
if (window_data != 0x0) {
if (window_data->specific != 0x0) {
SWindowData_X11 *window_data_x11 = (SWindowData_X11 *) window_data->specific;
if (window_data_x11->image != 0x0) {
window_data_x11->image->data = 0x0;
XDestroyImage(window_data_x11->image);
XDestroyWindow(window_data_x11->display, window_data_x11->window);
@ -543,11 +559,11 @@ void init_keycodes(SWindowData_X11 *window_data_x11) {
g_keycodes[i] = KB_KEY_UNKNOWN;
// Valid key code range is [8,255], according to the Xlib manual
for(int i=8; i<=255; ++i) {
for (int i=8; i<=255; ++i) {
// Try secondary keysym, for numeric keypad keys
keySym = XkbKeycodeToKeysym(window_data_x11->display, i, 0, 1);
g_keycodes[i] = translateKeyCodeB(keySym);
if(g_keycodes[i] == KB_KEY_UNKNOWN) {
if (g_keycodes[i] == KB_KEY_UNKNOWN) {
keySym = XkbKeycodeToKeysym(window_data_x11->display, i, 0, 0);
g_keycodes[i] = translateKeyCodeA(keySym);
}
@ -595,7 +611,7 @@ int translate_mod_ex(int key, int state, int is_pressed) {
{
case KB_KEY_LEFT_SHIFT:
case KB_KEY_RIGHT_SHIFT:
if(is_pressed)
if (is_pressed)
mod_keys |= KB_MOD_SHIFT;
else
mod_keys &= ~KB_MOD_SHIFT;
@ -603,7 +619,7 @@ int translate_mod_ex(int key, int state, int is_pressed) {
case KB_KEY_LEFT_CONTROL:
case KB_KEY_RIGHT_CONTROL:
if(is_pressed)
if (is_pressed)
mod_keys |= KB_MOD_CONTROL;
else
mod_keys &= ~KB_MOD_CONTROL;
@ -611,7 +627,7 @@ int translate_mod_ex(int key, int state, int is_pressed) {
case KB_KEY_LEFT_ALT:
case KB_KEY_RIGHT_ALT:
if(is_pressed)
if (is_pressed)
mod_keys |= KB_MOD_ALT;
else
mod_keys &= ~KB_MOD_ALT;
@ -619,7 +635,7 @@ int translate_mod_ex(int key, int state, int is_pressed) {
case KB_KEY_LEFT_SUPER:
case KB_KEY_RIGHT_SUPER:
if(is_pressed)
if (is_pressed)
mod_keys |= KB_MOD_SUPER;
else
mod_keys &= ~KB_MOD_SUPER;
@ -631,14 +647,13 @@ int translate_mod_ex(int key, int state, int is_pressed) {
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
bool mfb_set_viewport(struct Window *window, unsigned offset_x, unsigned offset_y, unsigned width, unsigned height)
{
bool mfb_set_viewport(struct Window *window, unsigned offset_x, unsigned offset_y, unsigned width, unsigned height) {
SWindowData *window_data = (SWindowData *) window;
if(offset_x + width > window_data->window_width) {
if (offset_x + width > window_data->window_width) {
return false;
}
if(offset_y + height > window_data->window_height) {
if (offset_y + height > window_data->window_height) {
return false;
}
@ -646,5 +661,6 @@ bool mfb_set_viewport(struct Window *window, unsigned offset_x, unsigned offset_
window_data->dst_offset_y = offset_y;
window_data->dst_width = width;
window_data->dst_height = height;
return true;
}

10
tests/input_events.c
View File

@ -2,11 +2,12 @@
#include <stdio.h>
#include <stdint.h>
#define kUnused(var) (void) var;
#define kUnused(var) (void) var
#define WIDTH 800
#define HEIGHT 600
static unsigned int g_buffer[WIDTH * HEIGHT];
static bool g_active = true;
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
@ -16,6 +17,7 @@ void active(struct Window *window, bool isActive) {
window_title = (const char *) mfb_get_user_data(window);
}
fprintf(stdout, "%s > active: %d\n", window_title, isActive);
g_active = isActive;
}
void resize(struct Window *window, int width, int height) {
@ -109,6 +111,8 @@ int main()
int i;
UpdateState state;
if(g_active)
{
for (i = 0; i < WIDTH * HEIGHT; ++i)
{
noise = seed;
@ -123,6 +127,10 @@ int main()
}
state = mfb_update(window, g_buffer);
}
else {
state = mfb_update_events(window);
}
if (state != STATE_OK) {
window = 0x0;
break;