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Diffstat (limited to 'pugl/pugl/pugl_win.cpp')
-rw-r--r--pugl/pugl/pugl_win.cpp643
1 files changed, 643 insertions, 0 deletions
diff --git a/pugl/pugl/pugl_win.cpp b/pugl/pugl/pugl_win.cpp
new file mode 100644
index 0000000..874abba
--- /dev/null
+++ b/pugl/pugl/pugl_win.cpp
@@ -0,0 +1,643 @@
+/*
+ Copyright 2012-2015 David Robillard <http://drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/**
+ @file pugl_win.cpp Windows/WGL Pugl Implementation.
+*/
+
+#include <windows.h>
+#include <windowsx.h>
+#include <GL/gl.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wctype.h>
+
+#include "pugl/pugl_internal.h"
+
+#ifndef WM_MOUSEWHEEL
+# define WM_MOUSEWHEEL 0x020A
+#endif
+#ifndef WM_MOUSEHWHEEL
+# define WM_MOUSEHWHEEL 0x020E
+#endif
+#ifndef WHEEL_DELTA
+# define WHEEL_DELTA 120
+#endif
+#ifdef _WIN64
+# ifndef GWLP_USERDATA
+# define GWLP_USERDATA (-21)
+# endif
+#else
+# ifndef GWL_USERDATA
+# define GWL_USERDATA (-21)
+# endif
+#endif
+
+#define PUGL_LOCAL_CLOSE_MSG (WM_USER + 50)
+
+struct PuglInternalsImpl {
+ HWND hwnd;
+ HDC hdc;
+ HGLRC hglrc;
+ WNDCLASS wc;
+};
+
+LRESULT CALLBACK
+wndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);
+
+PuglView*
+puglInit()
+{
+ PuglView* view = (PuglView*)calloc(1, sizeof(PuglView));
+ PuglInternals* impl = (PuglInternals*)calloc(1, sizeof(PuglInternals));
+ if (!view || !impl) {
+ return NULL;
+ }
+
+ view->impl = impl;
+ view->width = 640;
+ view->height = 480;
+
+ return view;
+}
+
+PuglInternals*
+puglInitInternals(void)
+{
+ return (PuglInternals*)calloc(1, sizeof(PuglInternals));
+}
+
+void
+puglEnterContext(PuglView* view)
+{
+ PAINTSTRUCT ps;
+ BeginPaint(view->impl->hwnd, &ps);
+
+#ifdef PUGL_HAVE_GL
+ if (view->ctx_type == PUGL_GL) {
+ wglMakeCurrent(view->impl->hdc, view->impl->hglrc);
+ }
+#endif
+}
+
+void
+puglLeaveContext(PuglView* view, bool flush)
+{
+#ifdef PUGL_HAVE_GL
+ if (view->ctx_type == PUGL_GL && flush) {
+ glFlush();
+ SwapBuffers(view->impl->hdc);
+ }
+#endif
+
+ PAINTSTRUCT ps;
+ EndPaint(view->impl->hwnd, &ps);
+}
+
+int
+puglCreateWindow(PuglView* view, const char* title)
+{
+ static const TCHAR* DEFAULT_CLASSNAME = "Pugl";
+
+ PuglInternals* impl = view->impl;
+
+ if (!title) {
+ title = "Window";
+ }
+
+ WNDCLASSEX wc;
+ memset(&wc, 0, sizeof(wc));
+ wc.cbSize = sizeof(wc);
+ wc.style = CS_OWNDC;
+ wc.lpfnWndProc = wndProc;
+ wc.hInstance = GetModuleHandle(NULL);
+ wc.hIcon = LoadIcon(NULL, IDI_APPLICATION); // TODO: user-specified icon
+ wc.hCursor = LoadCursor(NULL, IDC_ARROW);
+ wc.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
+ wc.lpszClassName = view->windowClass ? view->windowClass : DEFAULT_CLASSNAME;
+ if (!RegisterClassEx(&wc)) {
+ free((void*)impl->wc.lpszClassName);
+ free(impl);
+ free(view);
+ return NULL;
+ }
+
+ int winFlags = WS_POPUPWINDOW | WS_CAPTION;
+ if (view->resizable) {
+ winFlags |= WS_SIZEBOX;
+ if (view->min_width || view->min_height) {
+ // Adjust the minimum window size to accomodate requested view size
+ RECT mr = { 0, 0, view->min_width, view->min_height };
+ AdjustWindowRectEx(&mr, winFlags, FALSE, WS_EX_TOPMOST);
+ view->min_width = mr.right - mr.left;
+ view->min_height = mr.bottom - mr.top;
+ }
+ }
+
+ // Adjust the window size to accomodate requested view size
+ RECT wr = { 0, 0, view->width, view->height };
+ AdjustWindowRectEx(&wr, winFlags, FALSE, WS_EX_TOPMOST);
+
+ impl->hwnd = CreateWindowEx(
+ WS_EX_TOPMOST,
+ wc.lpszClassName, title,
+ (view->parent ? WS_CHILD : winFlags),
+ CW_USEDEFAULT, CW_USEDEFAULT, wr.right-wr.left, wr.bottom-wr.top,
+ (HWND)view->parent, NULL, NULL, NULL);
+
+ if (!impl->hwnd) {
+ free((void*)impl->wc.lpszClassName);
+ free(impl);
+ free(view);
+ return 1;
+ }
+
+#ifdef _WIN64
+ SetWindowLongPtr(impl->hwnd, GWLP_USERDATA, (LONG_PTR)view);
+#else
+ SetWindowLongPtr(impl->hwnd, GWL_USERDATA, (LONG)view);
+#endif
+
+ impl->hdc = GetDC(impl->hwnd);
+
+ PIXELFORMATDESCRIPTOR pfd;
+ ZeroMemory(&pfd, sizeof(pfd));
+ pfd.nSize = sizeof(pfd);
+ pfd.nVersion = 1;
+ pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
+ pfd.iPixelType = PFD_TYPE_RGBA;
+ pfd.cColorBits = 24;
+ pfd.cDepthBits = 16;
+ pfd.iLayerType = PFD_MAIN_PLANE;
+
+ int format = ChoosePixelFormat(impl->hdc, &pfd);
+ SetPixelFormat(impl->hdc, format, &pfd);
+
+ impl->hglrc = wglCreateContext(impl->hdc);
+ if (!impl->hglrc) {
+ ReleaseDC(impl->hwnd, impl->hdc);
+ DestroyWindow(impl->hwnd);
+ UnregisterClass(impl->wc.lpszClassName, NULL);
+ free((void*)impl->wc.lpszClassName);
+ free(impl);
+ free(view);
+ return NULL;
+ }
+ wglMakeCurrent(impl->hdc, impl->hglrc);
+
+ return 0;
+}
+
+void
+puglShowWindow(PuglView* view)
+{
+ PuglInternals* impl = view->impl;
+
+ ShowWindow(impl->hwnd, SW_SHOWNORMAL);
+ view->visible = true;
+}
+
+void
+puglHideWindow(PuglView* view)
+{
+ PuglInternals* impl = view->impl;
+
+ ShowWindow(impl->hwnd, SW_HIDE);
+ view->visible = false;
+}
+
+void
+puglDestroy(PuglView* view)
+{
+ wglMakeCurrent(NULL, NULL);
+ wglDeleteContext(view->impl->hglrc);
+ ReleaseDC(view->impl->hwnd, view->impl->hdc);
+ DestroyWindow(view->impl->hwnd);
+ UnregisterClass(view->impl->wc.lpszClassName, NULL);
+ free(view->windowClass);
+ free(view->impl);
+ free(view);
+}
+
+static PuglKey
+keySymToSpecial(int sym)
+{
+ switch (sym) {
+ case VK_F1: return PUGL_KEY_F1;
+ case VK_F2: return PUGL_KEY_F2;
+ case VK_F3: return PUGL_KEY_F3;
+ case VK_F4: return PUGL_KEY_F4;
+ case VK_F5: return PUGL_KEY_F5;
+ case VK_F6: return PUGL_KEY_F6;
+ case VK_F7: return PUGL_KEY_F7;
+ case VK_F8: return PUGL_KEY_F8;
+ case VK_F9: return PUGL_KEY_F9;
+ case VK_F10: return PUGL_KEY_F10;
+ case VK_F11: return PUGL_KEY_F11;
+ case VK_F12: return PUGL_KEY_F12;
+ case VK_LEFT: return PUGL_KEY_LEFT;
+ case VK_UP: return PUGL_KEY_UP;
+ case VK_RIGHT: return PUGL_KEY_RIGHT;
+ case VK_DOWN: return PUGL_KEY_DOWN;
+ case VK_PRIOR: return PUGL_KEY_PAGE_UP;
+ case VK_NEXT: return PUGL_KEY_PAGE_DOWN;
+ case VK_HOME: return PUGL_KEY_HOME;
+ case VK_END: return PUGL_KEY_END;
+ case VK_INSERT: return PUGL_KEY_INSERT;
+ case VK_SHIFT: return PUGL_KEY_SHIFT;
+ case VK_CONTROL: return PUGL_KEY_CTRL;
+ case VK_MENU: return PUGL_KEY_ALT;
+ case VK_LWIN: return PUGL_KEY_SUPER;
+ case VK_RWIN: return PUGL_KEY_SUPER;
+ }
+ return (PuglKey)0;
+}
+
+static unsigned int
+getModifiers()
+{
+ unsigned int mods = 0;
+ mods |= (GetKeyState(VK_SHIFT) < 0) ? PUGL_MOD_SHIFT : 0;
+ mods |= (GetKeyState(VK_CONTROL) < 0) ? PUGL_MOD_CTRL : 0;
+ mods |= (GetKeyState(VK_MENU) < 0) ? PUGL_MOD_ALT : 0;
+ mods |= (GetKeyState(VK_LWIN) < 0) ? PUGL_MOD_SUPER : 0;
+ mods |= (GetKeyState(VK_RWIN) < 0) ? PUGL_MOD_SUPER : 0;
+ return mods;
+}
+
+static void
+initMouseEvent(PuglEvent* event,
+ PuglView* view,
+ int button,
+ bool press,
+ LPARAM lParam)
+{
+ POINT pt = { GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam) };
+ ClientToScreen(view->impl->hwnd, &pt);
+
+ if (press) {
+ SetCapture(view->impl->hwnd);
+ } else {
+ ReleaseCapture();
+ }
+
+ event->button.time = GetMessageTime();
+ event->button.type = press ? PUGL_BUTTON_PRESS : PUGL_BUTTON_RELEASE;
+ event->button.x = GET_X_LPARAM(lParam);
+ event->button.y = GET_Y_LPARAM(lParam);
+ event->button.x_root = pt.x;
+ event->button.y_root = pt.y;
+ event->button.state = getModifiers();
+ event->button.button = button;
+}
+
+static void
+initScrollEvent(PuglEvent* event, PuglView* view, LPARAM lParam, WPARAM wParam)
+{
+ POINT pt = { GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam) };
+ ScreenToClient(view->impl->hwnd, &pt);
+
+ event->scroll.time = GetMessageTime();
+ event->scroll.type = PUGL_SCROLL;
+ event->scroll.x = pt.x;
+ event->scroll.y = pt.y;
+ event->scroll.x_root = GET_X_LPARAM(lParam);
+ event->scroll.y_root = GET_Y_LPARAM(lParam);
+ event->scroll.state = getModifiers();
+ event->scroll.dx = 0;
+ event->scroll.dy = 0;
+}
+
+static unsigned int
+utf16_to_code_point(const wchar_t* input, size_t input_size)
+{
+ unsigned int code_unit = *input;
+ // Equiv. range check between 0xD800 to 0xDBFF inclusive
+ if ((code_unit & 0xFC00) == 0xD800) {
+ if (input_size < 2) {
+ // "Error: is surrogate but input_size too small"
+ return 0xFFFD; // replacement character
+ }
+
+ unsigned int code_unit_2 = *++input;
+ // Equiv. range check between 0xDC00 to 0xDFFF inclusive
+ if ((code_unit_2 & 0xFC00) == 0xDC00) {
+ return (code_unit << 10) + code_unit_2 - 0x35FDC00;
+ }
+
+ // TODO: push_back(code_unit_2);
+ // "Error: Unpaired surrogates."
+ return 0xFFFD; // replacement character
+ }
+ return code_unit;
+}
+
+static void
+initKeyEvent(PuglEvent* event, PuglView* view, bool press, LPARAM lParam)
+{
+ POINT rpos = { 0, 0 };
+ GetCursorPos(&rpos);
+
+ POINT cpos = { rpos.x, rpos.y };
+ ScreenToClient(view->impl->hwnd, &rpos);
+
+ event->key.type = press ? PUGL_KEY_PRESS : PUGL_KEY_RELEASE;
+ event->key.time = GetMessageTime();
+ event->key.state = getModifiers();
+ event->key.x_root = rpos.x;
+ event->key.y_root = rpos.y;
+ event->key.x = cpos.x;
+ event->key.y = cpos.y;
+ event->key.keycode = (lParam & 0xFF0000) >> 16;
+ event->key.character = 0;
+ event->key.special = static_cast<PuglKey>(0);
+ event->key.filter = 0;
+}
+
+static void
+wcharBufToEvent(wchar_t* buf, int n, PuglEvent* event)
+{
+ if (n > 0) {
+ char* charp = reinterpret_cast<char*>(event->key.utf8);
+ if (!WideCharToMultiByte(CP_UTF8, 0, buf, n,
+ charp, 8, NULL, NULL)) {
+ /* error: could not convert to utf-8,
+ GetLastError has details */
+ memset(event->key.utf8, 0, 8);
+ // replacement character
+ event->key.utf8[0] = 0xEF;
+ event->key.utf8[1] = 0xBF;
+ event->key.utf8[2] = 0xBD;
+ }
+
+ event->key.character = utf16_to_code_point(buf, n);
+ } else {
+ // replacement character
+ event->key.utf8[0] = 0xEF;
+ event->key.utf8[1] = 0xBF;
+ event->key.utf8[2] = 0xBD;
+ event->key.character = 0xFFFD;
+ }
+}
+
+static void
+translateMessageParamsToEvent(LPARAM lParam, WPARAM wParam, PuglEvent* event)
+{
+ /* TODO: This is a kludge. Would be nice to use ToUnicode here, but this
+ breaks composed keys because it messes with the keyboard state. Not
+ sure how to correctly handle this on Windows. */
+
+ // This is how I really want to do this, but it breaks composed keys (é,
+ // è, ü, ö, and so on) because ToUnicode messes with the keyboard state.
+
+ //wchar_t buf[5];
+ //BYTE keyboard_state[256];
+ //int wcharCount = 0;
+ //GetKeyboardState(keyboard_state);
+ //wcharCount = ToUnicode(wParam, MapVirtualKey(wParam, MAPVK_VK_TO_VSC),
+ // keyboard_state, buf, 4, 0);
+ //wcharBufToEvent(buf, wcharCount, event);
+
+ // So, since Google refuses to give me a better solution, and if no one
+ // else has a better solution, I will make a hack...
+ wchar_t buf[5] = { 0, 0, 0, 0, 0 };
+ UINT c = MapVirtualKey(wParam, MAPVK_VK_TO_CHAR);
+ buf[0] = c & 0xffff;
+ // TODO: This does not take caps lock into account
+ // TODO: Dead keys should affect key releases as well
+ if (!(event->key.state && PUGL_MOD_SHIFT))
+ buf[0] = towlower(buf[0]);
+ wcharBufToEvent(buf, 1, event);
+ event->key.filter = ((c >> 31) & 0x1);
+}
+
+static void
+translateCharEventToEvent(WPARAM wParam, PuglEvent* event)
+{
+ wchar_t buf[2];
+ int wcharCount;
+ if (wParam & 0xFFFF0000) {
+ wcharCount = 2;
+ buf[0] = (wParam & 0xFFFF);
+ buf[1] = ((wParam >> 16) & 0xFFFF);
+ } else {
+ wcharCount = 1;
+ buf[0] = (wParam & 0xFFFF);
+ }
+ wcharBufToEvent(buf, wcharCount, event);
+}
+
+static bool
+ignoreKeyEvent(PuglView* view, LPARAM lParam)
+{
+ return view->ignoreKeyRepeat && (lParam & (1 << 30));
+}
+
+static LRESULT
+handleMessage(PuglView* view, UINT message, WPARAM wParam, LPARAM lParam)
+{
+ PuglEvent event;
+ void* dummy_ptr = NULL;
+ RECT rect;
+ MINMAXINFO* mmi;
+ POINT pt;
+ bool dispatchThisEvent = true;
+
+ memset(&event, 0, sizeof(event));
+
+ event.any.type = PUGL_NOTHING;
+ event.any.view = view;
+ if (InSendMessageEx(dummy_ptr)) {
+ event.any.flags |= PUGL_IS_SEND_EVENT;
+ }
+
+ switch (message) {
+ case WM_CREATE:
+ case WM_SHOWWINDOW:
+ case WM_SIZE:
+ GetWindowRect(view->impl->hwnd, &rect);
+ event.configure.type = PUGL_CONFIGURE;
+ event.configure.x = rect.left;
+ event.configure.y = rect.top;
+ view->width = rect.right - rect.left;
+ view->height = rect.bottom - rect.top;
+ event.configure.width = view->width;
+ event.configure.height = view->height;
+ break;
+ case WM_GETMINMAXINFO:
+ mmi = (MINMAXINFO*)lParam;
+ mmi->ptMinTrackSize.x = view->min_width;
+ mmi->ptMinTrackSize.y = view->min_height;
+ break;
+ case WM_PAINT:
+ GetUpdateRect(view->impl->hwnd, &rect, false);
+ event.expose.type = PUGL_EXPOSE;
+ event.expose.x = rect.left;
+ event.expose.y = rect.top;
+ event.expose.width = rect.right - rect.left;
+ event.expose.height = rect.bottom - rect.top;
+ event.expose.count = 0;
+ break;
+ case WM_MOUSEMOVE:
+ pt.x = GET_X_LPARAM(lParam);
+ pt.y = GET_Y_LPARAM(lParam);
+ ClientToScreen(view->impl->hwnd, &pt);
+
+ event.motion.type = PUGL_MOTION_NOTIFY;
+ event.motion.time = GetMessageTime();
+ event.motion.x = GET_X_LPARAM(lParam);
+ event.motion.y = GET_Y_LPARAM(lParam);
+ event.motion.x_root = pt.x;
+ event.motion.y_root = pt.y;
+ event.motion.state = getModifiers();
+ event.motion.is_hint = false;
+ break;
+ case WM_LBUTTONDOWN:
+ initMouseEvent(&event, view, 1, true, lParam);
+ break;
+ case WM_MBUTTONDOWN:
+ initMouseEvent(&event, view, 2, true, lParam);
+ break;
+ case WM_RBUTTONDOWN:
+ initMouseEvent(&event, view, 3, true, lParam);
+ break;
+ case WM_LBUTTONUP:
+ initMouseEvent(&event, view, 1, false, lParam);
+ break;
+ case WM_MBUTTONUP:
+ initMouseEvent(&event, view, 2, false, lParam);
+ break;
+ case WM_RBUTTONUP:
+ initMouseEvent(&event, view, 3, false, lParam);
+ break;
+ case WM_MOUSEWHEEL:
+ initScrollEvent(&event, view, lParam, wParam);
+ event.scroll.dy = GET_WHEEL_DELTA_WPARAM(wParam) / (float)WHEEL_DELTA;
+ break;
+ case WM_MOUSEHWHEEL:
+ initScrollEvent(&event, view, lParam, wParam);
+ event.scroll.dx = GET_WHEEL_DELTA_WPARAM(wParam) / (float)WHEEL_DELTA;
+ break;
+ case WM_KEYDOWN:
+ if (!ignoreKeyEvent(view, lParam)) {
+ initKeyEvent(&event, view, true, lParam);
+ if (!(event.key.special = keySymToSpecial(wParam))) {
+ event.key.type = PUGL_NOTHING;
+ }
+ }
+ break;
+ case WM_CHAR:
+ if (!ignoreKeyEvent(view, lParam)) {
+ initKeyEvent(&event, view, true, lParam);
+ translateCharEventToEvent(wParam, &event);
+ }
+ break;
+ case WM_DEADCHAR:
+ if (!ignoreKeyEvent(view, lParam)) {
+ initKeyEvent(&event, view, true, lParam);
+ translateCharEventToEvent(wParam, &event);
+ event.key.filter = 1;
+ }
+ break;
+ case WM_KEYUP:
+ initKeyEvent(&event, view, false, lParam);
+ if (!(event.key.special = keySymToSpecial(wParam))) {
+ translateMessageParamsToEvent(lParam, wParam, &event);
+ }
+ break;
+ case WM_QUIT:
+ case PUGL_LOCAL_CLOSE_MSG:
+ event.close.type = PUGL_CLOSE;
+ break;
+ default:
+ return DefWindowProc(
+ view->impl->hwnd, message, wParam, lParam);
+ }
+
+ puglDispatchEvent(view, &event);
+
+ return 0;
+}
+
+void
+puglGrabFocus(PuglView* view)
+{
+ // TODO
+}
+
+PuglStatus
+puglWaitForEvent(PuglView* view)
+{
+ WaitMessage();
+ return PUGL_SUCCESS;
+}
+
+PuglStatus
+puglProcessEvents(PuglView* view)
+{
+ MSG msg;
+ while (PeekMessage(&msg, view->impl->hwnd, 0, 0, PM_REMOVE)) {
+ TranslateMessage(&msg);
+ handleMessage(view, msg.message, msg.wParam, msg.lParam);
+ }
+
+ if (view->redisplay) {
+ InvalidateRect(view->impl->hwnd, NULL, FALSE);
+ }
+
+ return PUGL_SUCCESS;
+}
+
+LRESULT CALLBACK
+wndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
+{
+#ifdef _WIN64
+ PuglView* view = (PuglView*)GetWindowLongPtr(hwnd, GWLP_USERDATA);
+#else
+ PuglView* view = (PuglView*)GetWindowLongPtr(hwnd, GWL_USERDATA);
+#endif
+
+ switch (message) {
+ case WM_CREATE:
+ PostMessage(hwnd, WM_SHOWWINDOW, TRUE, 0);
+ return 0;
+ case WM_CLOSE:
+ PostMessage(hwnd, PUGL_LOCAL_CLOSE_MSG, wParam, lParam);
+ return 0;
+ case WM_DESTROY:
+ return 0;
+ default:
+ if (view && hwnd == view->impl->hwnd) {
+ return handleMessage(view, message, wParam, lParam);
+ } else {
+ return DefWindowProc(hwnd, message, wParam, lParam);
+ }
+ }
+}
+
+void
+puglPostRedisplay(PuglView* view)
+{
+ view->redisplay = true;
+}
+
+PuglNativeWindow
+puglGetNativeWindow(PuglView* view)
+{
+ return (PuglNativeWindow)view->impl->hwnd;
+}