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Win32: Extract retrieving preedit text as a function

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This commit is contained in:
Takuro Ashie 2022-04-15 14:22:55 +09:00 committed by Daijiro Fukuda
parent 3a4d7eb85a
commit 4fd32183f8
1 changed files with 91 additions and 82 deletions
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173
src/win32_window.c
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@ -544,6 +544,93 @@ static void _win32ChangeCursorPosition(HIMC hIMC, _GLFWwindow* window)
ImmSetCandidateWindow(hIMC, &excludeRect);
}
static GLFWbool getImmPreedit(_GLFWwindow* window)
{
HWND hWnd = window->win32.handle;
HIMC hIMC = ImmGetContext(hWnd);
// get preedit data sizes
LONG preeditTextLength = ImmGetCompositionStringW(hIMC, GCS_COMPSTR, NULL, 0);
LONG attrLength = ImmGetCompositionStringW(hIMC, GCS_COMPATTR, NULL, 0);
LONG clauseLength = ImmGetCompositionStringW(hIMC, GCS_COMPCLAUSE, NULL, 0);
if (preeditTextLength > 0)
{
int i;
int ctext = window->ctext;
int cblocks = window->cblocks;
int focusedBlock = 0;
int length = preeditTextLength / sizeof(WCHAR);
LPWSTR buffer = (LPWSTR) _glfw_calloc(preeditTextLength, 1);
LPSTR attributes = (LPSTR) _glfw_calloc(attrLength, 1);
DWORD *clauses = (DWORD*) _glfw_calloc(clauseLength, 1);
// get preedit data
ImmGetCompositionStringW(hIMC, GCS_COMPSTR, buffer, preeditTextLength);
ImmGetCompositionStringW(hIMC, GCS_COMPATTR, attributes, attrLength);
ImmGetCompositionStringW(hIMC, GCS_COMPCLAUSE, clauses, clauseLength);
// store preedit text
while (ctext < length + 1)
ctext = (ctext == 0) ? 1 : ctext * 2;
if (ctext != window->ctext)
{
unsigned int* preeditText = _glfw_realloc(window->preeditText, sizeof(unsigned int) * ctext);
if (preeditText == NULL)
{
_glfw_free(buffer);
_glfw_free(attributes);
_glfw_free(clauses);
return GLFW_FALSE;
}
window->preeditText = preeditText;
window->ctext = ctext;
}
window->ntext = length;
window->preeditText[length] = 0;
for (i = 0; i < length; i++)
window->preeditText[i] = buffer[i];
// store blocks
window->nblocks = clauseLength / sizeof(DWORD) - 1;
// last element of clauses is a block count, but
// text length is convenient.
clauses[window->nblocks] = length;
while (cblocks < window->nblocks)
cblocks = (cblocks == 0) ? 1 : cblocks * 2;
if (cblocks != window->cblocks)
{
int* blocks = _glfw_realloc(window->preeditAttributeBlocks, sizeof(int) * cblocks);
if (blocks == NULL)
{
_glfw_free(buffer);
_glfw_free(attributes);
_glfw_free(clauses);
return GLFW_FALSE;
}
window->preeditAttributeBlocks = blocks;
window->cblocks = cblocks;
}
for (i = 0; i < window->nblocks; i++)
{
window->preeditAttributeBlocks[i] = clauses[i + 1] - clauses[i];
if (attributes[clauses[i]] != ATTR_CONVERTED)
focusedBlock = i;
}
_glfw_free(buffer);
_glfw_free(attributes);
_glfw_free(clauses);
_glfwInputPreedit(window, focusedBlock);
_win32ChangeCursorPosition(hIMC, window);
}
ImmReleaseContext(hWnd, hIMC);
return GLFW_TRUE;
}
// Window callback function (handles window messages)
//
static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
@ -849,88 +936,10 @@ static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM l
}
if (lParam & GCS_COMPSTR)
{
HIMC hIMC = ImmGetContext(hWnd);
// get preedit data sizes
LONG preeditTextLength = ImmGetCompositionStringW(hIMC, GCS_COMPSTR, NULL, 0);
LONG attrLength = ImmGetCompositionStringW(hIMC, GCS_COMPATTR, NULL, 0);
LONG clauseLength = ImmGetCompositionStringW(hIMC, GCS_COMPCLAUSE, NULL, 0);
if (preeditTextLength > 0)
{
int i;
int ctext = window->ctext;
int cblocks = window->cblocks;
int focusedBlock = 0;
int length = preeditTextLength / sizeof(WCHAR);
LPWSTR buffer = (LPWSTR) _glfw_calloc(preeditTextLength, 1);
LPSTR attributes = (LPSTR) _glfw_calloc(attrLength, 1);
DWORD *clauses = (DWORD*) _glfw_calloc(clauseLength, 1);
// get preedit data
ImmGetCompositionStringW(hIMC, GCS_COMPSTR, buffer, preeditTextLength);
ImmGetCompositionStringW(hIMC, GCS_COMPATTR, attributes, attrLength);
ImmGetCompositionStringW(hIMC, GCS_COMPCLAUSE, clauses, clauseLength);
// store preedit text
while (ctext < length + 1)
ctext = (ctext == 0) ? 1 : ctext * 2;
if (ctext != window->ctext)
{
unsigned int* preeditText = _glfw_realloc(window->preeditText, sizeof(unsigned int) * ctext);
if (preeditText == NULL)
{
_glfw_free(buffer);
_glfw_free(attributes);
_glfw_free(clauses);
return 0;
}
window->preeditText = preeditText;
window->ctext = ctext;
}
window->ntext = length;
window->preeditText[length] = 0;
for (i = 0; i < length; i++)
window->preeditText[i] = buffer[i];
// store blocks
window->nblocks = clauseLength / sizeof(DWORD) - 1;
// last element of clauses is a block count, but
// text length is convenient.
clauses[window->nblocks] = length;
while (cblocks < window->nblocks)
cblocks = (cblocks == 0) ? 1 : cblocks * 2;
if (cblocks != window->cblocks)
{
int* blocks = _glfw_realloc(window->preeditAttributeBlocks, sizeof(int) * cblocks);
if (blocks == NULL)
{
_glfw_free(buffer);
_glfw_free(attributes);
_glfw_free(clauses);
return 0;
}
window->preeditAttributeBlocks = blocks;
window->cblocks = cblocks;
}
for (i = 0; i < window->nblocks; i++)
{
window->preeditAttributeBlocks[i] = clauses[i + 1] - clauses[i];
if (attributes[clauses[i]] != ATTR_CONVERTED)
focusedBlock = i;
}
_glfw_free(buffer);
_glfw_free(attributes);
_glfw_free(clauses);
_glfwInputPreedit(window, focusedBlock);
_win32ChangeCursorPosition(hIMC, window);
}
ImmReleaseContext(hWnd, hIMC);
return TRUE;
if (getImmPreedit(window))
return TRUE;
else
return 0;
}
break;
}