diff options
| author | Pietro Gagliardi <[email protected]> | 2014-08-30 23:02:02 -0400 |
|---|---|---|
| committer | Pietro Gagliardi <[email protected]> | 2014-08-30 23:02:02 -0400 |
| commit | 77bf566ebbcb62acd4d08d905d9542d6ff9b6b80 (patch) | |
| tree | eeb8e72bc3bf57f5be7f0c0af4319189ac6de838 /redo/container_windows.go | |
| parent | 155899c65ed32245e2ccad4197a10c77017d835b (diff) | |
...in with the new.
Diffstat (limited to 'redo/container_windows.go')
| -rw-r--r-- | redo/container_windows.go | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/redo/container_windows.go b/redo/container_windows.go deleted file mode 100644 index d3fd327..0000000 --- a/redo/container_windows.go +++ /dev/null @@ -1,147 +0,0 @@ -// 4 august 2014 - -package ui - -import ( - "fmt" - "syscall" - "unsafe" -) - -// #include "winapi_windows.h" -import "C" - -type container struct { - containerbase - hwnd C.HWND - nchildren int - isGroup bool -} - -type sizing struct { - sizingbase - - // for size calculations - baseX C.int - baseY C.int - internalLeading C.LONG // for Label; see Label.commitResize() for details - - // for the actual resizing - // possibly the HDWP -} - -func makeContainerWindowClass() error { - var errmsg *C.char - - err := C.makeContainerWindowClass(&errmsg) - if err != 0 || errmsg != nil { - return fmt.Errorf("%s: %v", C.GoString(errmsg), syscall.Errno(err)) - } - return nil -} - -func newContainer(control Control) *container { - c := new(container) - hwnd := C.newContainer(unsafe.Pointer(c)) - if hwnd != c.hwnd { - panic(fmt.Errorf("inconsistency: hwnd returned by CreateWindowEx() (%p) and hwnd stored in container (%p) differ", hwnd, c.hwnd)) - } - c.child = control - c.child.setParent(&controlParent{c}) - return c -} - -func (c *container) setParent(hwnd C.HWND) { - C.controlSetParent(c.hwnd, hwnd) -} - -// this is needed because Windows won't move/resize a child window for us -func (c *container) move(r *C.RECT) { - C.moveWindow(c.hwnd, C.int(r.left), C.int(r.top), C.int(r.right - r.left), C.int(r.bottom - r.top)) -} - -func (c *container) show() { - C.ShowWindow(c.hwnd, C.SW_SHOW) -} - -func (c *container) hide() { - C.ShowWindow(c.hwnd, C.SW_HIDE) -} - -//export storeContainerHWND -func storeContainerHWND(data unsafe.Pointer, hwnd C.HWND) { - c := (*container)(data) - c.hwnd = hwnd -} - -//export containerResize -func containerResize(data unsafe.Pointer, r *C.RECT) { - c := (*container)(data) - // the origin of any window's content area is always (0, 0), but let's use the values from the RECT just to be safe - c.resize(int(r.left), int(r.top), int(r.right - r.left), int(r.bottom - r.top)) -} - -// For Windows, Microsoft just hands you a list of preferred control sizes as part of the MSDN documentation and tells you to roll with it. -// These sizes are given in "dialog units", which are independent of the font in use. -// We need to convert these into standard pixels, which requires we get the device context of the OS window. -// References: -// - http://msdn.microsoft.com/en-us/library/ms645502%28VS.85%29.aspx - the calculation needed -// - http://support.microsoft.com/kb/125681 - to get the base X and Y -// (thanks to http://stackoverflow.com/questions/58620/default-button-size) -// In my tests (see https://github.com/andlabs/windlgunits), the GetTextExtentPoint32() option for getting the base X produces much more accurate results than the tmAveCharWidth option when tested against the sample values given in http://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing, but can be off by a pixel in either direction (probably due to rounding errors). - -// note on MulDiv(): -// div will not be 0 in the usages below -// we also ignore overflow; that isn't likely to happen for our use case anytime soon - -func fromdlgunitsX(du int, d *sizing) int { - return int(C.MulDiv(C.int(du), d.baseX, 4)) -} - -func fromdlgunitsY(du int, d *sizing) int { - return int(C.MulDiv(C.int(du), d.baseY, 8)) -} - -const ( - marginDialogUnits = 7 - paddingDialogUnits = 4 - - groupXMargin = 6 - groupYMarginTop = 11 // note this value /includes the groupbox label/ - groupYMarginBottom = 7 -) - -func (c *container) beginResize() (d *sizing) { - var baseX, baseY C.int - var internalLeading C.LONG - - d = new(sizing) - - C.calculateBaseUnits(c.hwnd, &baseX, &baseY, &internalLeading) - d.baseX = baseX - d.baseY = baseY - d.internalLeading = internalLeading - - if spaced { - d.xmargin = fromdlgunitsX(marginDialogUnits, d) - d.ymargintop = fromdlgunitsY(marginDialogUnits, d) - d.ymarginbottom = d.ymargintop - d.xpadding = fromdlgunitsX(paddingDialogUnits, d) - d.ypadding = fromdlgunitsY(paddingDialogUnits, d) - } - if c.isGroup { - // note that these values apply regardless of whether or not spaced is set - // this is because Windows groupboxes have the client rect spanning the entire size of the control, not just the active work area - // the measurements Microsoft give us are for spaced margining; let's just use them - d.xmargin = fromdlgunitsX(groupXMargin, d) - d.ymargintop = fromdlgunitsY(groupYMarginTop, d) - d.ymarginbottom = fromdlgunitsY(groupYMarginBottom, d) - - } - - return d -} - -func (c *container) translateAllocationCoords(allocations []*allocation, winwidth, winheight int) { - // no translation needed on windows -} |
