mirror of
https://github.com/xiaoyifang/goldendict-ng.git
synced 2024-11-24 04:24:09 +00:00
115 lines
2.9 KiB
C++
115 lines
2.9 KiB
C++
#include <windows.h>
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#include <servprov.h>
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#include "wordbyauto.hh"
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#include "uiauto.hh"
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#include <cstdio>
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#include "gddebug.hh"
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class GDAutomationClient {
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public:
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GDAutomationClient();
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~GDAutomationClient();
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bool getWordAtPoint( POINT pt );
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WCHAR *getText() { return buffer; }
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private:
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WCHAR buffer[256];
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IUIAutomation *pGDAutomation;
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IUIAutomationTreeWalker *pTree;
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};
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GDAutomationClient gdAuto;
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GDAutomationClient::GDAutomationClient()
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{
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HRESULT hr;
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CoInitializeEx( NULL, COINIT_APARTMENTTHREADED );
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hr = CoCreateInstance( CLSID_CUIAutomation , NULL, CLSCTX_INPROC_SERVER, IID_IUIAutomation, (void**)&pGDAutomation );
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if( hr != S_OK ) pGDAutomation = NULL;
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pTree = NULL;
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if( pGDAutomation != NULL )
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hr = pGDAutomation->get_RawViewWalker( &pTree );
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memset( buffer, 0, sizeof(buffer) );
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}
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GDAutomationClient::~GDAutomationClient()
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{
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if( pTree != NULL ) pTree->Release();
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if( pGDAutomation != NULL ) pGDAutomation->Release();
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CoUninitialize();
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}
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bool GDAutomationClient::getWordAtPoint( POINT pt )
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{
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HRESULT hr;
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IUIAutomationTextPattern *pTextPattern;
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IUIAutomationTextRange *pTextRange;
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IUIAutomationElement *pElement, *pParent;
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BSTR bstr;
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RECT r = { 0, 0, 0, 0 };
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bool bGoUp;
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DPRINTF("\nEntering getWordAtPoint\n");
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if( pGDAutomation == NULL ) return false;
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buffer[0] = 0;
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pElement = NULL;
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hr = pGDAutomation->ElementFromPoint( pt, &pElement );
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DPRINTF("ElementFromPoint return hr=%08lX, ptr=%p\n", hr, pElement);
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if( hr != S_OK || pElement == NULL )
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return false;
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pTextPattern = NULL;
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bGoUp = false;
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while( pElement != NULL ) {
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hr = pElement->GetCurrentPatternAs( UIA_TextPatternId, IID_IUIAutomationTextPattern, (void**)&pTextPattern );
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if( hr == S_OK && pTextPattern != NULL )
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break;
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if( pTree == NULL ) {
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pElement->Release();
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return false;
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}
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pParent = NULL;
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hr = pTree->GetParentElement( pElement, &pParent );
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pElement->Release();
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pElement = pParent;
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bGoUp = TRUE;
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}
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if( pElement == NULL )
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return false;
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if( !bGoUp ) {
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hr = pElement->get_CurrentBoundingRectangle( &r );
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if( hr == S_OK) {
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pt.x -= r.left;
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pt.y -= r.top;
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}
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}
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pElement->Release();
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pTextRange = NULL;
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hr = pTextPattern->RangeFromPoint( pt, &pTextRange );
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pTextPattern->Release();
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if( hr != S_OK || pTextRange == NULL )
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return false;
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hr = pTextRange->ExpandToEnclosingUnit( TextUnit_Word );
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if( hr == S_OK) {
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hr = pTextRange->GetText( 255, &bstr );
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if (hr == S_OK) {
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wsprintfW( buffer, L"%s", (LPCWSTR)bstr );
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SysFreeString( bstr );
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}
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}
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pTextRange->Release();
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return ( buffer[0] != 0 );
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}
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WCHAR *gdGetWordAtPointByAutomation( POINT pt )
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{
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if( gdAuto.getWordAtPoint( pt ) ) return gdAuto.getText();
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else return NULL;
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}
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