diff --git a/include/Mw/LowLevel.h b/include/Mw/LowLevel.h index a2be271..b58d54e 100644 --- a/include/Mw/LowLevel.h +++ b/include/Mw/LowLevel.h @@ -39,6 +39,7 @@ struct _MwLLCommon { int type; int coordinate_type; MwBool supports_transparency; + const char** known_mime_types; MwLLHandler handler; }; @@ -315,6 +316,12 @@ MWDECL void (*MwLLGetClipboard)(MwLL handle, int clipboard_type); MWDECL void (*MwLLGetCursorCoord)(MwLL handle, MwPoint* point); MWDECL void (*MwLLGetScreenSize)(MwLL handle, MwRect* rect); +/*! + * @brief Setup drag and drop capabilities, should the user request it with MwNacceptsDnD + * @param handle Handle + */ +MWDECL void (*MwLLSetupDragAndDrop)(MwLL handle); + /*! * @brief Set any extra parameters for dark theme * @param handle Handle diff --git a/include/Mw/LowLevel/GDI.h b/include/Mw/LowLevel/GDI.h index e505b0a..6230a36 100644 --- a/include/Mw/LowLevel/GDI.h +++ b/include/Mw/LowLevel/GDI.h @@ -29,6 +29,11 @@ struct _MwLLGDI { int force_render; int get_clipboard; int get_darktheme; + + /* drag and drop */ + struct _MwLLGDIDropTarget* dropTarget; + struct _MwLLGDIDropSource* dropSource; + MwBool drag_update; }; struct _MwLLGDIColor { @@ -47,6 +52,14 @@ struct _MwLLGDIPixmap { HBITMAP hMask2; }; +struct _MwLLGDIDropTarget{ + struct IDropTargetVtbl *lpVtbl; + LONG refCount; + HWND hwnd; + MwLL handle; +}; +typedef struct _MwLLGDIDropTarget MwLLGDIDropTarget; + MWDECL int MwLLGDICallInit(void); MWDECL HCURSOR MwLLGDICreateCursor(MwCursor* image, MwCursor* mask); diff --git a/include/Mw/StringDefs.h b/include/Mw/StringDefs.h index b95fe93..5f9e3e4 100644 --- a/include/Mw/StringDefs.h +++ b/include/Mw/StringDefs.h @@ -53,6 +53,7 @@ #define MwNcolumnSpan "IcolumnSpan" #define MwNrowSpan "IrowSpan" #define MwNdisabled "Idisabled" +#define MwNacceptsDnD "IacceptsDnD" #define MwNtitle "Stitle" #define MwNtext "Stext" @@ -62,6 +63,8 @@ #define MwNforeground "Sforeground" #define MwNsubForeground "SsubForeground" #define MwNtitleForeground "StitleForeground" +#define MwNacceptedMimeType "SacceptedMimeType" + #define MwNvulkanExtension "SEvulkanExtension" #define MwNvulkanLayer "SEvulkanLayer" @@ -98,5 +101,6 @@ #define MwNdrawHandler "Cdraw" #define MwNclipboardHandler "Cclipboard" #define MwNdarkThemeHandler "CdarkTheme" +#define MwNdragAndDropHandler "CdragAndDrop" #endif diff --git a/include/Mw/TypeDefs.h b/include/Mw/TypeDefs.h index 5989e1b..fbc91fa 100644 --- a/include/Mw/TypeDefs.h +++ b/include/Mw/TypeDefs.h @@ -274,7 +274,7 @@ struct _MwClass { MwHandlerChildrenProp children_prop_change; MwHandlerClipboardReceived clipboard; MwHandlerProps props_change; - void* reserved1; + MwHandler drag_and_drop; void* reserved2; void* reserved3; }; diff --git a/src/backend/cairo.c b/src/backend/cairo.c index 0c26ff3..d70de1b 100644 --- a/src/backend/cairo.c +++ b/src/backend/cairo.c @@ -212,8 +212,8 @@ static void MwLLFreeColorImpl(MwLLColor color) {} static MwBool lmao = MwFALSE; static int MwLLPendingImpl(MwLL handle) { - lmao = !lmao; - return lmao; + lmao = !lmao; + return lmao; } static void MwLLNextEventImpl(MwLL handle) { MwLLDispatch(handle, draw, NULL); @@ -255,11 +255,12 @@ static MwBool MwLLDoModernImpl(MwLL handle) { } static void MwLLRaiseImpl(MwLL handle) {} static void MwLLClipImpl(MwLL handle, MwRect* rect) {} +static void MwLLSetupDragAndDropImpl(MwLL handle) {} static int MwLLCairoCallInitImpl(void) { - if(cairo_load_funcs() != 0) { - return 1; - } - return 0; + if(cairo_load_funcs() != 0) { + return 1; + } + return 0; } #include "call.c" CALL(Cairo); diff --git a/src/backend/call.c b/src/backend/call.c index f84247f..0deffb4 100644 --- a/src/backend/call.c +++ b/src/backend/call.c @@ -52,8 +52,9 @@ MwLLSetClipboard = MwLLSetClipboardImpl; \ MwLLGetClipboard = MwLLGetClipboardImpl; \ \ - MwLLGetCursorCoord = MwLLGetCursorCoordImpl; \ - MwLLGetScreenSize = MwLLGetScreenSizeImpl; \ + MwLLGetCursorCoord = MwLLGetCursorCoordImpl; \ + MwLLGetScreenSize = MwLLGetScreenSizeImpl; \ + MwLLSetupDragAndDrop = MwLLSetupDragAndDropImpl; \ \ MwLLSetDarkTheme = MwLLSetDarkThemeImpl; \ MwLLDoModern = MwLLDoModernImpl; \ diff --git a/src/backend/classicmacos.c b/src/backend/classicmacos.c index d3da454..f063551 100644 --- a/src/backend/classicmacos.c +++ b/src/backend/classicmacos.c @@ -347,6 +347,10 @@ static void MwLLGetCursorCoordImpl(MwLL handle, MwPoint* point) { static void MwLLGetScreenSizeImpl(MwLL handle, MwRect* rect) { } +static void MwLLSetupDragAndDropImpl(MwLL handle) { + (void)handle; +} + static void MwLLBeginStateChangeImpl(MwLL handle) { MwLLShow(handle, 0); } diff --git a/src/backend/cocoa.m b/src/backend/cocoa.m index e07eb64..85b8b5b 100644 --- a/src/backend/cocoa.m +++ b/src/backend/cocoa.m @@ -1146,6 +1146,10 @@ static void MwLLGetScreenSizeImpl(MwLL handle, MwRect* rect) { rect->height = [screen frame].size.height; } +static void MwLLSetupDragAndDropImpl(MwLL handle) { + (void)handle; +} + static void MwLLBeginStateChangeImpl(MwLL handle) { MwLLShow(handle, 0); } diff --git a/src/backend/gdi.c b/src/backend/gdi.c index acc341e..dbd87ac 100644 --- a/src/backend/gdi.c +++ b/src/backend/gdi.c @@ -1,5 +1,7 @@ #include +#include "../../external/stb_ds.h" + typedef struct userdata { MwLL ll; POINT min; @@ -10,8 +12,26 @@ typedef struct userdata { static struct symtbl { void* lib_dwmapi; + void* shell32lib; + void* ole32lib; + void* urlmonlib; + MwBool has_drag_and_drop; HRESULT(WINAPI* DwmSetWindowAttribute)(HWND hwnd, DWORD dwAttribute, LPCVOID pvAttribute, DWORD cbAttribute); + UINT(WINAPI* DragQueryFileW)(HDROP hDrop, UINT iFile, LPWSTR lpszFile, UINT cch); + UINT(WINAPI* DragQueryFileA)(HDROP hDrop, UINT iFile, LPSTR lpszFile, UINT cch); + void(WINAPI* ReleaseStgMedium)(LPSTGMEDIUM unnamedParam1); + HRESULT(WINAPI* OleInitialize)(LPVOID pvReserved); + HRESULT(WINAPI* RegisterDragDrop)(HWND hwnd, LPDROPTARGET pDropTarget); + HRESULT(WINAPI* FindMimeFromData)( + LPBC pBC, + LPCWSTR pwzUrl, + LPVOID pBuffer, + DWORD cbSize, + LPCWSTR pwzMimeProposed, + DWORD dwMimeFlags, + LPWSTR* ppwzMimeOut, + DWORD dwReserved); } wsymtbl; static int is_plgblt_reliable = 0; @@ -420,6 +440,9 @@ static MwLL MwLLCreateImpl(MwLL parent, int x, int y, int width, int height) { SetWindowPos(r->gdi.hWnd, NULL, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE); + r->gdi.dropTarget = NULL; + r->gdi.drag_update = MwFALSE; + return r; } @@ -434,6 +457,8 @@ static void MwLLDestroyImpl(MwLL handle) { if(handle->gdi.cursor != NULL) DestroyCursor(handle->gdi.cursor); + if(handle->gdi.dropTarget) free(handle->gdi.dropTarget); + free(handle); } @@ -547,7 +572,7 @@ static int MwLLPendingImpl(MwLL handle) { (void)handle; - if(handle->gdi.get_clipboard || handle->gdi.get_darktheme) return 1; + if(handle->gdi.get_clipboard || handle->gdi.get_darktheme || handle->gdi.drag_update) return 1; return PeekMessage(&msg, handle->gdi.hWnd, 0, 0, PM_NOREMOVE) ? 1 : 0; } @@ -579,8 +604,7 @@ static void MwLLNextEventImpl(MwLL handle) { handle->gdi.get_darktheme = 0; } - while(PeekMessage(&msg, handle->gdi.hWnd, 0, 0, PM_NOREMOVE)) { - GetMessage(&msg, handle->gdi.hWnd, 0, 0); + while(PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) { TranslateMessage(&msg); DispatchMessage(&msg); } @@ -994,8 +1018,134 @@ static void MwLLClipImpl(MwLL handle, MwRect* rect) { } } +static HRESULT STDMETHODCALLTYPE GDIDT_QueryInterface(IDropTarget* this_, REFIID riid, void** ppv) { + if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IDropTarget)) { + *ppv = this_; + this_->lpVtbl->AddRef(this_); + return S_OK; + } + *ppv = NULL; + return E_NOINTERFACE; +} + +static ULONG STDMETHODCALLTYPE GDIDT_AddRef(IDropTarget* this_) { + MwLLGDIDropTarget* self = (MwLLGDIDropTarget*)this_; + return InterlockedIncrement(&self->refCount); +} + +static ULONG STDMETHODCALLTYPE GDIDT_Release(IDropTarget* this_) { + MwLLGDIDropTarget* self = (MwLLGDIDropTarget*)this_; + LONG c = InterlockedDecrement(&self->refCount); + if(c == 0) free(self); + return c; +} + +static HRESULT STDMETHODCALLTYPE GDIDT_DragEnter(IDropTarget* this_, IDataObject* pDataObj, + DWORD grfKeyState, POINTL pt, DWORD* pdwEffect) { + *pdwEffect = DROPEFFECT_COPY; + return S_OK; +} + +static HRESULT STDMETHODCALLTYPE GDIDT_DragOver(IDropTarget* this_, DWORD grfKeyState, + POINTL pt, DWORD* pdwEffect) { + MwLLGDIDropTarget* self = (MwLLGDIDropTarget*)this_; + self->handle->gdi.drag_update = MwTRUE; + + return S_OK; +} + +static HRESULT STDMETHODCALLTYPE GDIDT_DragLeave(IDropTarget* this_) { + MwLLGDIDropTarget* self = (MwLLGDIDropTarget*)this_; + self->handle->gdi.drag_update = MwFALSE; + return S_OK; +} + +static HRESULT STDMETHODCALLTYPE GDIDT_Drop(IDropTarget* this_, IDataObject* pDataObj, + DWORD grfKeyState, POINTL pt, DWORD* pdwEffect) { + FORMATETC fmt = {CF_HDROP, NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL}; + STGMEDIUM stg; + MwLLGDIDropTarget* self = (MwLLGDIDropTarget*)this_; + + self->handle->gdi.drag_update = MwTRUE; + + if(pDataObj->lpVtbl->GetData(pDataObj, &fmt, &stg) == S_OK) { + HDROP hDrop = (HDROP)stg.hGlobal; + UINT count = wsymtbl.DragQueryFileW(hDrop, 0xFFFFFFFF, NULL, 0); + UINT i, n; + HRESULT hr; + + for(i = 0; i < count; i++) { + wchar_t path[MAX_PATH]; + char path_normal[MAX_PATH]; + char* mime_type_normal; + wchar_t* mime_type = NULL; + int mime_type_size; + HRESULT hr; + int i; + + wsymtbl.DragQueryFileW(hDrop, i, path, MAX_PATH); + wsymtbl.DragQueryFileA(hDrop, i, path_normal, MAX_PATH); + hr = wsymtbl.FindMimeFromData(NULL, path, NULL, 0, + NULL, FMFD_DEFAULT, &mime_type, 0x0); + + mime_type_size = WideCharToMultiByte(CP_ACP, 0, mime_type, -1, NULL, 0, NULL, FALSE); + mime_type_normal = malloc(sizeof(mime_type_size)); + WideCharToMultiByte(CP_ACP, 0, mime_type, -1, mime_type_normal, mime_type_size, NULL, FALSE); + + if(mime_type_size == 0) { + printf("Error converting mime type to multi-byte: %ld\n", GetLastError()); + } else { + if(self->handle->common.known_mime_types) { + for(n = 0; n < arrlen(self->handle->common.known_mime_types); n++) { + if(strcmp(mime_type_normal, self->handle->common.known_mime_types[n]) == 0) { + MwDispatchUserHandler(self->handle->common.user, MwNdragAndDropHandler, path_normal); + break; + } + } + } else { + MwDispatchUserHandler(self->handle->common.user, MwNdragAndDropHandler, path_normal); + } + } + free(mime_type); + } + + wsymtbl.ReleaseStgMedium(&stg); + *pdwEffect = DROPEFFECT_COPY; + } else { + *pdwEffect = DROPEFFECT_NONE; + } + return S_OK; +} + +static IDropTargetVtbl DropTarget_Vtbl = { + GDIDT_QueryInterface, + GDIDT_AddRef, + GDIDT_Release, + GDIDT_DragEnter, + GDIDT_DragOver, + GDIDT_DragLeave, + GDIDT_Drop}; + +static void MwLLSetupDragAndDropImpl(MwLL handle) { + HRESULT hr = 0; + + handle->gdi.dropTarget = (MwLLGDIDropTarget*)malloc(sizeof(MwLLGDIDropTarget)); + handle->gdi.dropTarget->lpVtbl = &DropTarget_Vtbl; + handle->gdi.dropTarget->refCount = 1; + handle->gdi.dropTarget->hwnd = handle->gdi.hWnd; + handle->gdi.dropTarget->handle = handle; + + hr = wsymtbl.RegisterDragDrop(handle->gdi.hWnd, (IDropTarget*)handle->gdi.dropTarget); + if(!SUCCEEDED(hr)) { + printf("RegisterDragDrop failed; %08lx\n", hr); + return; + } + printf("dnd setup\n"); +} + static int MwLLGDICallInitImpl(void) { - void* ntdll; + void* ntdll; + HRESULT hr; memset(&wsymtbl, 0, sizeof(wsymtbl)); @@ -1009,6 +1159,69 @@ static int MwLLGDICallInitImpl(void) { is_plgblt_reliable = 1; } + wsymtbl.has_drag_and_drop = MwFALSE; + + /* Drag and Drop initialization */ + { + hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED); + /* The only other error - COM already being initialized - can be ignored */ + if(hr == RPC_E_CHANGED_MODE) { + goto no_dnd; + } + if(!SUCCEEDED(hr) && hr != S_FALSE) { + printf("CoInitialize error: %08lx\n", hr); + goto dnd_error; + } + hr = OleInitialize(NULL); + if(!SUCCEEDED(hr)) { + if(hr == RPC_E_CHANGED_MODE) { + no_dnd: + printf("Cannot do drag and drop; Microsoft hates you and if you use COM anywhere else it has to be apartment threaded.\n"); + goto dnd_error; + } else { + printf("OleInitialize failed; %08lx. Drag and Drop won't be supported.\n", hr); + goto dnd_error; + } + } + + wsymtbl.has_drag_and_drop = MwTRUE; + + if(!(wsymtbl.shell32lib = LoadLibrary("shell32.dll"))) { + goto dnd_error; + }; + if(!(wsymtbl.ole32lib = LoadLibrary("ole32.dll"))) { + goto dnd_error; + }; + if(!(wsymtbl.urlmonlib = LoadLibrary("Urlmon.dll"))) { + goto dnd_error; + }; + +#define SHELL32_FUNC(x) \ + if(!(wsymtbl.x = (void*)GetProcAddress(wsymtbl.shell32lib, #x))) { \ + printf(#x "not found, drag and drop will not be supported"); \ + goto dnd_error; \ + } +#define OLE32_FUNC(x) \ + if(!(wsymtbl.x = (void*)GetProcAddress(wsymtbl.ole32lib, #x))) { \ + printf(#x "not found, drag and drop will not be supported"); \ + goto dnd_error; \ + } +#define URLMON_FUNC(x) \ + if(!(wsymtbl.x = (void*)GetProcAddress(wsymtbl.urlmonlib, #x))) { \ + printf(#x "not found, drag and drop will not be supported"); \ + goto dnd_error; \ + } + + SHELL32_FUNC(DragQueryFileW); + SHELL32_FUNC(DragQueryFileA); + OLE32_FUNC(ReleaseStgMedium); + OLE32_FUNC(RegisterDragDrop); + URLMON_FUNC(FindMimeFromData); + + wsymtbl.has_drag_and_drop = MwTRUE; + } +dnd_error: + /* TODO: check properly */ return 0; } diff --git a/src/backend/haiku.cc b/src/backend/haiku.cc index 8c4f8bf..2c796d6 100644 --- a/src/backend/haiku.cc +++ b/src/backend/haiku.cc @@ -879,6 +879,10 @@ static void MwLLGetScreenSizeImpl(MwLL handle, MwRect* rect) { delete screen; } +static void MwLLSetupDragAndDropImpl(MwLL handle) { + (void)handle; +} + static void MwLLSetDarkThemeImpl(MwLL handle, int toggle) { (void)handle; (void)toggle; diff --git a/src/backend/wayland/wayland.c b/src/backend/wayland/wayland.c index 48d6c76..839e9ac 100644 --- a/src/backend/wayland/wayland.c +++ b/src/backend/wayland/wayland.c @@ -1779,6 +1779,10 @@ static void MwLLGetScreenSizeImpl(MwLL handle, MwRect* rect) { rect->height = handle->wayland.mh; } +static void MwLLSetupDragAndDropImpl(MwLL handle) { + (void)handle; +} + static void MwLLBeginStateChangeImpl(MwLL handle) { (void)handle; /* no-op */ diff --git a/src/backend/x11.c b/src/backend/x11.c index 79ce429..cc4d22b 100644 --- a/src/backend/x11.c +++ b/src/backend/x11.c @@ -1361,6 +1361,10 @@ static void MwLLGetScreenSizeImpl(MwLL handle, MwRect* rect) { rect->height = xwa.height; } +static void MwLLSetupDragAndDropImpl(MwLL handle) { + (void)handle; +} + static void MwLLBeginStateChangeImpl(MwLL handle) { MwLLShow(handle, 0); } diff --git a/src/core.c b/src/core.c index 7059840..2eca665 100644 --- a/src/core.c +++ b/src/core.c @@ -658,6 +658,10 @@ void MwSetInteger(MwWidget handle, const char* key, int n) { if(h->lowlevel != NULL) MwLLSetDarkTheme(h->lowlevel, n); } + + if(strcmp(key, MwNacceptsDnD) == 0) { + if(handle->lowlevel != NULL) MwLLSetupDragAndDrop(handle->lowlevel); + } } void MwSetText(MwWidget handle, const char* key, const char* value) { @@ -692,6 +696,12 @@ void MwSetText(MwWidget handle, const char* key, const char* value) { if(strcmp(key, MwNbackground) == 0 || strcmp(key, MwNforeground) == 0 || strcmp(key, MwNsubBackground) == 0 || strcmp(key, MwNsubForeground) == 0) { MwForceRender(handle); } + + if(strcmp(key, MwNacceptedMimeType) == 0) { + if(handle->lowlevel != NULL) { + arrput(handle->lowlevel->common.known_mime_types, value); + } + } } void MwSetVoid(MwWidget handle, const char* key, void* value) { diff --git a/src/lowlevel.c b/src/lowlevel.c index bc9e55b..aca10c2 100644 --- a/src/lowlevel.c +++ b/src/lowlevel.c @@ -50,8 +50,8 @@ void (*MwLLGetClipboard)(MwLL, int clipboard_type) = NULL; void (*MwLLGetCursorCoord)(MwLL handle, MwPoint* point) = NULL; void (*MwLLGetScreenSize)(MwLL handle, MwRect* rect) = NULL; - -void (*MwLLSetDarkTheme)(MwLL handle, int toggle) = NULL; +void (*MwLLSetupDragAndDrop)(MwLL handle) = NULL; +void (*MwLLSetDarkTheme)(MwLL handle, int toggle) = NULL; MwBool (*MwLLDoModern)(MwLL handle) = NULL; @@ -64,6 +64,7 @@ void MwLLCreateCommon(MwLL handle) { memset(handle->common.handler, 0, sizeof(*handle->common.handler)); handle->common.supports_transparency = 0; + handle->common.known_mime_types = NULL; } void MwLLDestroyCommon(MwLL handle) { diff --git a/src/widget/entry.c b/src/widget/entry.c index 65cd903..dd867d7 100644 --- a/src/widget/entry.c +++ b/src/widget/entry.c @@ -9,6 +9,7 @@ static int wcreate(MwWidget handle) { t->right = 0; t->length = 0; t->cursor_blink_timer = 0; + t->active = 0; handle->internal = t; while(topmost_parent->parent) topmost_parent = topmost_parent->parent; @@ -40,7 +41,7 @@ static void tick(MwWidget handle) { if(++t->cursor_blink_timer >= 30) { t->cursor_blink_timer = 0; } - MwDispatch(handle, draw); + MwForceRender(handle); } } static void draw(MwWidget handle) { @@ -185,7 +186,7 @@ static void mouse_down(MwWidget handle, void* ptr) { MwEntry t = topmost_parent->monitored_entries[i]->internal; t->active = MwFALSE; t->cursor_blink_timer = 0; - MwDispatch(topmost_parent->monitored_entries[i], draw); + MwForceRender(topmost_parent->monitored_entries[i]); } t->active = MwTRUE; MwForceRender2(handle, NULL);