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Moved Windows container functions from util_windows.c to container_windows.c.

This commit is contained in:
Pietro Gagliardi 2015-04-07 11:39:15 -04:00
parent 0ec9dc9320
commit 32c6555fc0
3 changed files with 87 additions and 83 deletions
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85
new/container_windows.c Normal file
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@ -0,0 +1,85 @@
// 7 april 2015
#include "uipriv_windows.h"
/*
all container windows (including the message-only window, hence this is not in container_windows.c) have to call the sharedWndProc() to ensure messages go in the right place and control colors are handled properly
*/
/*
all controls that have events receive the events themselves through subclasses
to do this, all container windows (including the message-only window; see http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q104069) forward WM_COMMAND to each control with this function, WM_NOTIFY with forwardNotify, etc.
*/
static LRESULT forwardCommand(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
HWND control = (HWND) lParam;
// don't generate an event if the control (if there is one) is unparented (a child of the initial parent window)
if (control != NULL && IsChild(initialParent, control) == 0)
return SendMessageW(control, msgCOMMAND, wParam, lParam);
return DefWindowProcW(hwnd, uMsg, wParam, lParam);
}
static LRESULT forwardNotify(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
NMHDR *nmhdr = (NMHDR *) lParam;
HWND control = nmhdr->hwndFrom;
// don't generate an event if the control (if there is one) is unparented (a child of the initial parent window)
if (control != NULL && IsChild(initialParent, control) == 0)
return SendMessageW(control, msgNOTIFY, wParam, lParam);
return DefWindowProcW(hwnd, uMsg, wParam, lParam);
}
BOOL sharedWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT *lResult)
{
switch (uMsg) {
case WM_COMMAND:
*lResult = forwardCommand(hwnd, uMsg, wParam, lParam);
return TRUE;
case WM_NOTIFY:
*lResult = forwardNotify(hwnd, uMsg, wParam, lParam);
return TRUE;
/*TODO case WM_CTLCOLORSTATIC:
case WM_CTLCOLORBTN:
// read-only TextFields and Textboxes are exempt
// this is because read-only edit controls count under WM_CTLCOLORSTATIC
if (windowClassOf((HWND) lParam, L"edit", NULL) == 0)
if (textfieldReadOnly((HWND) lParam))
return FALSE;
if (SetBkMode((HDC) wParam, TRANSPARENT) == 0)
xpanic("error setting transparent background mode to Labels", GetLastError());
paintControlBackground((HWND) lParam, (HDC) wParam);
*lResult = (LRESULT) hollowBrush;
return TRUE;
*/ }
return FALSE;
}
// TODO add function names to errors
void resize(uiControl *control, HWND parent, RECT r)
{
uiSizing d;
HDC dc;
HFONT prevFont;
TEXTMETRICW tm;
SIZE size;
dc = GetDC(parent);
if (dc == NULL)
logLastError("error getting DC for preferred size calculations");
prevFont = (HFONT) SelectObject(dc, hMessageFont);
if (prevFont == NULL)
logLastError("error loading control font into device context for preferred size calculation");
if (GetTextMetricsW(dc, &tm) == 0)
logLastError("error getting text metrics for preferred size calculations");
if (GetTextExtentPoint32W(dc, L"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz", 52, &size) == 0)
logLastError("error getting text extent point for preferred size calculations");
d.baseX = (int) ((size.cx / 26 + 1) / 2);
d.baseY = (int) tm.tmHeight;
d.internalLeading = tm.tmInternalLeading;
if (SelectObject(dc, prevFont) != hMessageFont)
logLastError("error restoring previous font into device context after preferred size calculations");
if (ReleaseDC(parent, dc) == 0)
logLastError("error releasing DC for preferred size calculations");
(*(control->resize))(control, r.left, r.top, r.right - r.left, r.bottom - r.top, &d);
}

2
new/uipriv_windows.h
View File

@ -63,6 +63,8 @@ extern HWND initialParent;
// util_windows.c
extern WCHAR *toUTF16(const char *);
// container_windows.c
extern BOOL sharedWndProc(HWND, UINT, WPARAM, LPARAM, LRESULT *);
extern void resize(uiControl *, HWND, RECT);

83
new/util_windows.c
View File

@ -16,86 +16,3 @@ WCHAR *toUTF16(const char *str)
logLastError("error converting from UTF-8 to UTF-16 in toUTF16()");
return wstr;
}
/*
all container windows (including the message-only window, hence this is not in container_windows.c) have to call the sharedWndProc() to ensure messages go in the right place and control colors are handled properly
*/
/*
all controls that have events receive the events themselves through subclasses
to do this, all container windows (including the message-only window; see http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q104069) forward WM_COMMAND to each control with this function, WM_NOTIFY with forwardNotify, etc.
*/
static LRESULT forwardCommand(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
HWND control = (HWND) lParam;
// don't generate an event if the control (if there is one) is unparented (a child of the initial parent window)
if (control != NULL && IsChild(initialParent, control) == 0)
return SendMessageW(control, msgCOMMAND, wParam, lParam);
return DefWindowProcW(hwnd, uMsg, wParam, lParam);
}
static LRESULT forwardNotify(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
NMHDR *nmhdr = (NMHDR *) lParam;
HWND control = nmhdr->hwndFrom;
// don't generate an event if the control (if there is one) is unparented (a child of the initial parent window)
if (control != NULL && IsChild(initialParent, control) == 0)
return SendMessageW(control, msgNOTIFY, wParam, lParam);
return DefWindowProcW(hwnd, uMsg, wParam, lParam);
}
BOOL sharedWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT *lResult)
{
switch (uMsg) {
case WM_COMMAND:
*lResult = forwardCommand(hwnd, uMsg, wParam, lParam);
return TRUE;
case WM_NOTIFY:
*lResult = forwardNotify(hwnd, uMsg, wParam, lParam);
return TRUE;
/*TODO case WM_CTLCOLORSTATIC:
case WM_CTLCOLORBTN:
// read-only TextFields and Textboxes are exempt
// this is because read-only edit controls count under WM_CTLCOLORSTATIC
if (windowClassOf((HWND) lParam, L"edit", NULL) == 0)
if (textfieldReadOnly((HWND) lParam))
return FALSE;
if (SetBkMode((HDC) wParam, TRANSPARENT) == 0)
xpanic("error setting transparent background mode to Labels", GetLastError());
paintControlBackground((HWND) lParam, (HDC) wParam);
*lResult = (LRESULT) hollowBrush;
return TRUE;
*/ }
return FALSE;
}
// TODO add function names
void resize(uiControl *control, HWND parent, RECT r)
{
uiSizing d;
HDC dc;
HFONT prevFont;
TEXTMETRICW tm;
SIZE size;
dc = GetDC(parent);
if (dc == NULL)
logLastError("error getting DC for preferred size calculations");
prevFont = (HFONT) SelectObject(dc, hMessageFont);
if (prevFont == NULL)
logLastError("error loading control font into device context for preferred size calculation");
if (GetTextMetricsW(dc, &tm) == 0)
logLastError("error getting text metrics for preferred size calculations");
if (GetTextExtentPoint32W(dc, L"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz", 52, &size) == 0)
logLastError("error getting text extent point for preferred size calculations");
d.baseX = (int) ((size.cx / 26 + 1) / 2);
d.baseY = (int) tm.tmHeight;
d.internalLeading = tm.tmInternalLeading;
if (SelectObject(dc, prevFont) != hMessageFont)
logLastError("error restoring previous font into device context after preferred size calculations");
if (ReleaseDC(parent, dc) == 0)
logLastError("error releasing DC for preferred size calculations");
(*(control->resize))(control, r.left, r.top, r.right - r.left, r.bottom - r.top, &d);
}