mirror of
https://github.com/xiaoyifang/goldendict-ng.git
synced 2024-11-30 17:24:08 +00:00
475 lines
14 KiB
C
475 lines
14 KiB
C
/*
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* February 2, 2009: Konstantin Isakov <ikm@goldendict.org>
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* Support for ETO_GLYPH_INDEX in ExtTextOutW() function added. This makes
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* Firefox 3 work.
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*/
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#define _WIN32_WINNT 0x0500
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#include "TextOutHook.h"
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#include "GetWord.h"
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#include "HookImportFunction.h"
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typedef BOOL (WINAPI *TextOutANextHook_t)(HDC hdc, int nXStart, int nYStart, LPCSTR lpszString,int cbString);
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TextOutANextHook_t TextOutANextHook = NULL;
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typedef BOOL (WINAPI *TextOutWNextHook_t)(HDC hdc, int nXStart, int nYStart, LPCWSTR lpszString,int cbString);
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TextOutWNextHook_t TextOutWNextHook = NULL;
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typedef BOOL (WINAPI *ExtTextOutANextHook_t)(HDC hdc, int nXStart, int nYStart, UINT fuOptions, CONST RECT *lprc, LPCSTR lpszString, UINT cbString, CONST INT *lpDx);
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ExtTextOutANextHook_t ExtTextOutANextHook = NULL;
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typedef BOOL (WINAPI *ExtTextOutWNextHook_t)(HDC hdc, int nXStart, int nYStart, UINT fuOptions, CONST RECT *lprc, LPCWSTR lpszString, UINT cbString, CONST INT *lpDx);
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ExtTextOutWNextHook_t ExtTextOutWNextHook = NULL;
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TEverythingParams *CurParams = NULL;
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void ConvertToMatchedWordA(TEverythingParams *TP)
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{
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if (TP->WordLen>0) {
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int BeginPos;
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if (!TP->Unicode) {
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BeginPos = TP->BeginPos;
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if (BeginPos) {
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TP->BeginPos = MultiByteToWideChar(CP_ACP, 0, TP->MatchedWordA, BeginPos, TP->MatchedWordW, sizeof(TP->MatchedWordW)/sizeof(TP->MatchedWordW[0]) - 1);
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if (TP->BeginPos == 0) {
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TP->WordLen=0;
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TP->MatchedWordA[0] = '\0';
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return;
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}
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}
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TP->WordLen = MultiByteToWideChar(CP_ACP, 0, TP->MatchedWordA + BeginPos, TP->WordLen - BeginPos, TP->MatchedWordW + TP->BeginPos, sizeof(TP->MatchedWordW)/sizeof(TP->MatchedWordW[0]) - 1 - TP->BeginPos);
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if (TP->WordLen == 0) {
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TP->WordLen=TP->BeginPos;
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TP->MatchedWordA[TP->WordLen] = '\0';
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return;
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}
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TP->WordLen += TP->BeginPos;
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}
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BeginPos = TP->BeginPos;
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if (BeginPos) {
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wchar_t temp = TP->MatchedWordW[BeginPos];
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TP->MatchedWordW[BeginPos] = 0;
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TP->BeginPos = WideCharToMultiByte(CP_UTF8, 0, TP->MatchedWordW, BeginPos + 1, TP->MatchedWordA, sizeof(TP->MatchedWordA), NULL, NULL);
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TP->MatchedWordW[BeginPos] = temp;
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TP->BeginPos--;
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if (TP->BeginPos<=0) {
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TP->WordLen=0;
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TP->MatchedWordA[0] = '\0';
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return;
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} else if (TP->BeginPos == sizeof(TP->MatchedWordA)-1) {
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TP->WordLen=sizeof(TP->MatchedWordA)-1;
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TP->MatchedWordA[sizeof(TP->MatchedWordA)-1] = '\0';
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return;
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}
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}
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TP->MatchedWordW[TP->WordLen] = 0;
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TP->WordLen = WideCharToMultiByte(CP_UTF8, 0, TP->MatchedWordW + BeginPos, TP->WordLen - BeginPos + 1, TP->MatchedWordA + TP->BeginPos, sizeof(TP->MatchedWordA) - TP->BeginPos, NULL, NULL);
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TP->WordLen--;
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if (TP->WordLen<=0) {
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TP->WordLen=TP->BeginPos;
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TP->MatchedWordA[TP->WordLen] = '\0';
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return;
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}
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TP->WordLen += TP->BeginPos;
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TP->MatchedWordA[TP->WordLen] = '\0';
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} else {
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TP->MatchedWordA[0] = '\0';
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}
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}
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static int MyCopyMemory(char *a, const char *b, int len)
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{
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int count = 0;
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int i;
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for (i=0; i<len; i++) {
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if (*b != '&') {
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count++;
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*a = *b;
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a++;
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}
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b++;
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}
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return count;
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}
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static void IterateThroughItems(HWND WND, HMENU menu, POINT *p)
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{
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int count = GetMenuItemCount(menu);
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RECT rec;
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MENUITEMINFO info;
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int i;
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for (i=0; i<count; i++) {
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if (GetMenuItemRect(WND, menu, i, &rec) && (rec.left<=p->x) && (p->x<=rec.right) && (rec.top<=p->y) && (p->y<=rec.bottom)) {
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ZeroMemory(&info, sizeof(info));
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info.cbSize = sizeof(info);
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info.fMask = MIIM_TYPE | MIIM_SUBMENU;
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info.cch = 256;
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info.dwTypeData = malloc(256);
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GetMenuItemInfo(menu, i, TRUE, &info);
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if (info.cch>0) {
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if (info.cch > 255)
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CurParams->WordLen = 255;
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else
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CurParams->WordLen = info.cch;
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CurParams->Unicode = FALSE;
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CurParams->WordLen = MyCopyMemory(CurParams->MatchedWordA, info.dwTypeData, CurParams->WordLen);
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CurParams->BeginPos = 0;
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}
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free(info.dwTypeData);
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break;
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}
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}
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}
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static void GetWordTextOutHook (TEverythingParams *TP)
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{
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CurParams = TP;
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ScreenToClient(TP->WND, &(TP->Pt));
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if (TP->Pt.y<0) {
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char buffer[256];
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HMENU menu;
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char buffer2[256];
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GetWindowText(TP->WND, buffer, sizeof(buffer)-1);
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SetWindowText(TP->WND, "");
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GetWindowText(TP->WND, buffer2, sizeof(buffer2)-1);
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if (buffer2[0]) { // MDI window.
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char *p = strstr(buffer, buffer2);
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if (p) {
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if (p == buffer) { // FWS_PREFIXTITLE
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strcpy(buffer, buffer+strlen(buffer2));
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} else {
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*p = '\0';
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}
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}
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}
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CurParams->Active = TRUE;
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SetWindowText(TP->WND, buffer);
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CurParams->Active = FALSE;
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menu = GetMenu(TP->WND);
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if (menu) {
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ClientToScreen(TP->WND, &(TP->Pt));
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IterateThroughItems(TP->WND, menu, &(TP->Pt));
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}
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}
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else {
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RECT UpdateRect;
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GetClientRect(TP->WND, &UpdateRect);
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UpdateRect.top = TP->Pt.y;
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UpdateRect.bottom = TP->Pt.y + 1;
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CurParams->Active = TRUE;
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InvalidateRect(TP->WND, &UpdateRect, FALSE);
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UpdateWindow(TP->WND);
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CurParams->Active = FALSE;
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}
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CurParams = NULL;
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}
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char* ExtractFromEverything(HWND WND, POINT Pt, int *BeginPos)
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{
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TEverythingParams CParams;
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ZeroMemory(&CParams, sizeof(CParams));
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CParams.WND = WND;
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CParams.Pt = Pt;
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GetWordTextOutHook(&CParams);
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ConvertToMatchedWordA(&CParams);
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*BeginPos = CParams.BeginPos;
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return _strdup(CParams.MatchedWordA);
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}
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static void IsInsidePointA(const HDC DC, int X, int Y, LPCSTR Str, int Count)
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{
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SIZE Size;
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if ((Count > 0) && GetTextExtentPoint32A(DC, Str, Count, &Size)) {
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DWORD Flags = GetTextAlign(DC);
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POINT Pt;
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RECT Rect;
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if (Flags & TA_UPDATECP) {
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GetCurrentPositionEx(DC, &Pt);
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} else {
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Pt.x = X;
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Pt.y = Y;
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}
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if (Flags & TA_CENTER) {
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Pt.x-=(Size.cx/2);
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} else if (Flags & TA_RIGHT) {
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Pt.x-=Size.cx;
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}
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if (Flags & TA_BASELINE) {
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TEXTMETRIC tm;
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GetTextMetricsA(DC, &tm);
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Pt.y-=tm.tmAscent;
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} else if (Flags & TA_BOTTOM) {
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Pt.y-=Size.cy;
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}
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LPtoDP(DC, &Pt, 1);
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Rect.left = Pt.x;
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Rect.right = Pt.x + Size.cx;
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Rect.top = Pt.y;
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Rect.bottom = Pt.y + Size.cy;
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if (((Rect.left <= Rect.right) && (CurParams->Pt.x >= Rect.left) && (CurParams->Pt.x <= Rect.right)) ||
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((Rect.left > Rect.right) && (CurParams->Pt.x <= Rect.left) && (CurParams->Pt.x >= Rect.right))) {
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int BegPos;
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//if (PtInRect(&Rect, CurParams->Pt)) {
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CurParams->Active = !PtInRect(&Rect, CurParams->Pt);
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//CurParams->Active = FALSE;
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BegPos = (int)((abs((CurParams->Pt.x - Rect.left) / (Rect.right - Rect.left)) * (Count - 1)) + 0.5);
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while ((BegPos < Count - 1) && GetTextExtentPoint32A(DC, Str, BegPos + 1, &Size) && (Size.cx < CurParams->Pt.x - Rect.left))
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BegPos++;
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while ((BegPos >= 0) && GetTextExtentPoint32A(DC, Str, BegPos + 1, &Size) && (Size.cx > CurParams->Pt.x - Rect.left))
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BegPos--;
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if (BegPos < Count - 1)
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BegPos++;
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CurParams->BeginPos = BegPos;
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if (Count > 255)
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CurParams->WordLen = 255;
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else
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CurParams->WordLen = Count;
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CurParams->Unicode = FALSE;
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CopyMemory(CurParams->MatchedWordA, Str, CurParams->WordLen);
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}
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}
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}
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static void IsInsidePointW(const HDC DC, int X, int Y, LPCWSTR Str, int Count)
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{
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SIZE Size;
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if ((Count > 0) && GetTextExtentPoint32W(DC, Str, Count, &Size)) {
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DWORD Flags = GetTextAlign(DC);
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POINT Pt;
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RECT Rect;
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if (Flags & TA_UPDATECP) {
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GetCurrentPositionEx(DC, &Pt);
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} else {
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Pt.x = X;
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Pt.y = Y;
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}
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if (Flags & TA_CENTER) {
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Pt.x-=(Size.cx/2);
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} else if (Flags & TA_RIGHT) {
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Pt.x-=Size.cx;
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}
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if (Flags & TA_BASELINE) {
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TEXTMETRICW tm;
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GetTextMetricsW(DC, &tm);
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Pt.y-=tm.tmAscent;
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} else if (Flags & TA_BOTTOM) {
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Pt.y-=Size.cy;
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}
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LPtoDP(DC, &Pt, 1);
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Rect.left = Pt.x;
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Rect.right = Pt.x + Size.cx;
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Rect.top = Pt.y;
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Rect.bottom = Pt.y + Size.cy;
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// Bug: We don't check Pt.y here, as don't call PtInRect() directly, because
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// in Title bar, Start Menu, IE, FireFox, Opera etc., the Rect.top and Rect.bottom will be wrong.
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// I try to use GetDCOrgEx(DC, &Pt), but they are not normal HDC that Pt.x and Pt.y will equal to 0 in these cases.
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// And use GetWindowRect() then get Rect.left and Rect.top is only useful on Title bar.
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if (((Rect.left <= Rect.right) && (CurParams->Pt.x >= Rect.left) && (CurParams->Pt.x <= Rect.right)) ||
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((Rect.left > Rect.right) && (CurParams->Pt.x <= Rect.left) && (CurParams->Pt.x >= Rect.right))) {
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int BegPos;
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//if (PtInRect(&Rect, CurParams->Pt)) {
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CurParams->Active = !PtInRect(&Rect, CurParams->Pt);
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//CurParams->Active = FALSE;
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BegPos = (int)((abs((CurParams->Pt.x - Rect.left) / (Rect.right - Rect.left)) * (Count - 1)) + 0.5);
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while ((BegPos < Count - 1) && GetTextExtentPoint32W(DC, Str, BegPos + 1, &Size) && (Size.cx < CurParams->Pt.x - Rect.left))
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BegPos++;
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while ((BegPos >= 0) && GetTextExtentPoint32W(DC, Str, BegPos + 1, &Size) && (Size.cx > CurParams->Pt.x - Rect.left))
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BegPos--;
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if (BegPos < Count - 1)
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BegPos++;
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CurParams->BeginPos = BegPos;
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if (Count > 255)
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CurParams->WordLen = 255;
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else
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CurParams->WordLen = Count;
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CurParams->Unicode = TRUE;
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CopyMemory(CurParams->MatchedWordW, Str, CurParams->WordLen * sizeof(wchar_t));
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}
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}
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}
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BOOL WINAPI TextOutACallbackProc(HDC hdc, int nXStart, int nYStart, LPCSTR lpszString, int cbString)
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{
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if (CurParams && CurParams->Active)
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IsInsidePointA(hdc, nXStart, nYStart, lpszString, cbString);
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return TextOutANextHook(hdc, nXStart, nYStart, lpszString, cbString);
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}
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BOOL WINAPI TextOutWCallbackProc(HDC hdc, int nXStart, int nYStart, LPCWSTR lpszString, int cbString)
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{
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if (CurParams && CurParams->Active)
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IsInsidePointW(hdc, nXStart, nYStart, lpszString, cbString);
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return TextOutWNextHook(hdc, nXStart, nYStart, lpszString, cbString);
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}
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BOOL WINAPI ExtTextOutACallbackProc(HDC hdc, int nXStart, int nYStart, UINT fuOptions, CONST RECT *lprc, LPCSTR lpszString, UINT cbString, CONST INT *lpDx)
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{
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if (CurParams && CurParams->Active)
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IsInsidePointA(hdc, nXStart, nYStart, lpszString, cbString);
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return ExtTextOutANextHook(hdc, nXStart, nYStart, fuOptions, lprc, lpszString, cbString, lpDx);
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}
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BOOL WINAPI ExtTextOutWCallbackProc(HDC hdc, int nXStart, int nYStart, UINT fuOptions, CONST RECT *lprc, LPCWSTR lpszString, UINT cbString, CONST INT *lpDx)
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{
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if (CurParams && CurParams->Active)
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{
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if ( fuOptions & ETO_GLYPH_INDEX )
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{
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LPGLYPHSET ranges;
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WCHAR * allChars, * ptr, * restoredString;
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WORD * allIndices;
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unsigned x;
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// Here we have to decode glyph indices back to chars. We do this
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// by tedious and ineffective iteration.
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//
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ranges = malloc( GetFontUnicodeRanges( hdc, 0 ) );
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GetFontUnicodeRanges( hdc, ranges );
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// Render up all available chars into one ridiculously big string
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allChars = malloc( ( ranges->cGlyphsSupported ) * sizeof( WCHAR ) );
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allIndices = malloc( ( ranges->cGlyphsSupported ) * sizeof( WORD ) );
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ptr = allChars;
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for( x = 0; x < ranges->cRanges; ++x )
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{
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WCHAR c = ranges->ranges[ x ].wcLow;
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unsigned y = ranges->ranges[ x ].cGlyphs;
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while( y-- )
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*ptr++ = c++;
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}
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// Amazing. Now get glyph indices for this one nice string.
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GetGlyphIndicesW( hdc, allChars, ranges->cGlyphsSupported, allIndices,
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GGI_MARK_NONEXISTING_GLYPHS );
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// Fascinating. Now translate our original input string back into
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// its readable form.
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restoredString = malloc( cbString * sizeof( WCHAR ) );
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for( x = 0; x < cbString; ++x )
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{
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unsigned y;
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WORD idx = lpszString[ x ];
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for( y = 0; y < ranges->cGlyphsSupported; ++y )
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if ( allIndices[ y ] == idx )
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{
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restoredString[ x ] = allChars[ y ];
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break;
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}
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if ( y == ranges->cGlyphsSupported )
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{
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// Not found
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restoredString[ x ] = L'?';
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}
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}
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// And we're done.
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free( allIndices );
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free( allChars );
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free( ranges );
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IsInsidePointW( hdc, nXStart, nYStart, restoredString, cbString );
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free( restoredString );
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}
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else
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IsInsidePointW(hdc, nXStart, nYStart, lpszString, cbString);
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}
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return ExtTextOutWNextHook(hdc, nXStart, nYStart, fuOptions, lprc, lpszString, cbString, lpDx);
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}
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static void InstallTextOutHooks()
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{
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if (TextOutANextHook==NULL)
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HookAPI("gdi32.dll", "TextOutA", (PROC)TextOutACallbackProc, (PROC*)&TextOutANextHook);
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if (TextOutWNextHook==NULL)
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HookAPI("gdi32.dll", "TextOutW", (PROC)TextOutWCallbackProc, (PROC*)&TextOutWNextHook);
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if (ExtTextOutANextHook==NULL)
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HookAPI("gdi32.dll", "ExtTextOutA", (PROC)ExtTextOutACallbackProc, (PROC*)&ExtTextOutANextHook);
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if (ExtTextOutWNextHook==NULL)
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HookAPI("gdi32.dll", "ExtTextOutW", (PROC)ExtTextOutWCallbackProc, (PROC*)&ExtTextOutWNextHook);
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}
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static void UninstallTextOutHooks()
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{
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if (TextOutANextHook) {
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HookAPI("gdi32.dll", "TextOutA", (PROC)TextOutANextHook, NULL);
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TextOutANextHook=NULL;
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}
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if (TextOutWNextHook) {
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HookAPI("gdi32.dll", "TextOutW", (PROC)TextOutWNextHook, NULL);
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TextOutWNextHook=NULL;
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}
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if (ExtTextOutANextHook) {
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HookAPI("gdi32.dll", "ExtTextOutA", (PROC)ExtTextOutANextHook, NULL);
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ExtTextOutANextHook=NULL;
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}
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if (ExtTextOutWNextHook) {
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HookAPI("gdi32.dll", "ExtTextOutW", (PROC)ExtTextOutWNextHook, NULL);
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ExtTextOutWNextHook=NULL;
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}
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}
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DLLIMPORT void __gdGetWord (TCurrentMode *P)
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{
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TCHAR wClassName[64];
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TKnownWndClass WndClass;
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char *p;
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if (GetClassName(P->WND, wClassName, sizeof(wClassName) / sizeof(TCHAR))==0)
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wClassName[0] = '\0';
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WndClass = GetWindowType(P->WND, wClassName);
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p = TryGetWordFromAnyWindow(WndClass, P->WND, P->Pt, &(P->BeginPos));
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if (p) {
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P->WordLen = strlen(p);
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strcpy(P->MatchedWord, p);
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free(p);
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} else {
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P->WordLen = 0;
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}
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}
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BOOL APIENTRY DllMain (HINSTANCE hInst /* Library instance handle. */ ,
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DWORD reason /* Reason this function is being called. */ ,
|
|
LPVOID reserved /* Not used. */ )
|
|
{
|
|
switch (reason)
|
|
{
|
|
case DLL_PROCESS_ATTACH:
|
|
//ThTypes_Init();
|
|
InstallTextOutHooks();
|
|
break;
|
|
|
|
case DLL_PROCESS_DETACH:
|
|
UninstallTextOutHooks();
|
|
//Thtypes_End();
|
|
break;
|
|
|
|
case DLL_THREAD_ATTACH:
|
|
break;
|
|
|
|
case DLL_THREAD_DETACH:
|
|
break;
|
|
}
|
|
|
|
/* Returns TRUE on success, FALSE on failure */
|
|
return TRUE;
|
|
}
|