// History of DotNetTabCtrl.h prior to codeproject article about it
// History (Date/Author/Description):
// 2002/06/12: Daniel Bowen (DDB)
// - Notifications no longer need to be reflected
// - Draw close button in CDotNetTabCtrlImpl when
// CTCS_CLOSEBUTTON style is set (draw in PostPaint)
// - Draw scroll buttons in CDotNetTabCtrlImpl when
// CTCS_SCROLL style is set.
// - Improve drawing. Override DoPrePaint, DoItemPaint, DoPostPaint
// instead of being a "client" of custom drawing. Use the
// custom draw structure colors, so that you pick up
// any changes that a client might be doing if they truly are
// using the custom draw functionality. Override
// InitializeDrawStruct to specify the defaults.
// - Move updating of the tab item tool tip RECT updating to
// "UpdateTabItemTooltipRects" in the base CCustomTabCtrl class.
// - On WM_SETTINGCHANGE, if CTCS_BOLDSELECTEDTAB is set,
// the bold font wasn't being deleted if one had already been set
// 2002/05/13: Daniel Bowen (DDB)
// - Minor updates to avoid level 4 warnings
// - Take out a trace statement in UpdateLayout
// 2002/05/09: Daniel Bowen (DDB)
// - Move out of CoolTabCtrls.h into its own file
// to match how Bjarke has reorganized it.
// Relevant history also moved.
// - Have the original CDotNetTabCtrl turn into
// an overrideable CDotNetTabCtrlImpl, and have
// CDotNetTabCtrl inherit from CDotNetTabCtrlImpl.
// - Minor updates to accomodate changes I made
// to CCustomTabCtrl (unsigned vs. signed types, etc.).
// - Incorporate suggestsion from Bjarke Viksoe
// (don't use atlmisc.h types, AtlGetDefaultGuiFont()
// instead of AtlGetStockFont(DEFAULT_GUI_FONT),
// UpdateLayout in OnSettingChange, etc.)
// 2002/04/26: Daniel Bowen (DDB)
// - CDotNetTabCtrl and CDotNetButtonTabCtrl -
// Owen Gunter [OwenG@d-graphic.co.uk] pointed out that
// the tabs were "shifting" when the selection changed
// (in tab controls that aren't bolding the selected tab).
// This was due to using "SelMargin" in some recent updates.
// Now, SelMargin is not used, just "Margin" - and the
// tabs shouldn't shift like they did.
// - Owen Gunter [OwenG@d-graphic.co.uk] suggested some
// slight modifications to CDotNetTabCtrl for drawing
// the tab background on the right side when the tabs
// are shown on top. Those modifications are in here now.
// 2002/04/22: Daniel Bowen (DDB)
// - Move the Image List and "bold selected tab" stuff to the
// base "CCustomTabCtrl" class. In a future revision, I'll
// probably update the base class to honor these, but for
// now, its up to the deriving class whether or not to use
// these things. Having them there makes it easier to use
// any CCustomTabCtrl derived class where there's a template
// parameter for the tab class, and where it might want to
// use the image list or bold the selected tab.
// - When the tabs are not a subclassed static control,
// the "GetFont" and "SetFont" calls were going in the bit
// bucket. CCustomTabCtrl now has a member variable
// "CFont m_font", and all the derived classes (with one
// exception) now use the base class version instead of their own.
// If a derived class has a bold font, they still declare
// that themselves. Because the base class "m_font" is
// managing the lifetime of the font (i.e., it calls DeleteObject
// in the destructor), the handler for WM_SETFONT makes
// a copy of the font instead of "pointing" to it.
// Typically, no one should be sending us WM_SETFONT.
// CFlatTabCtrl is the one deriving class that has its
// own version of m_font, because it wants to do a
// SetFont(m_fontBold) - which with the new way of things
// would cause CCustomTabCtrl::m_font and CFlatTabCtrl::m_fontBold
// to be the same.
// - More updates for CDotNetTabCtrl and CDotNetButtonTabCtrl
// to accomodate the current DPI and system metrics.
// The updates were focused on getting the padding and margin
// for the active and inactive tabs to be a better match
// for what VS.Net does under various DPI and font settings.
// It turned out to be quite difficult to get a pixel-for-pixel
// match to VS.Net under various font sizes and DPI settings.
// What's there now is not a perfect match, but its pretty good.
// - Change the logic for CDotNetTabCtrl and CDotNetButtonTabCtrl
// when they don't get all the real estate their tabs want.
// When the desired widths of the tabs would be too big for
// the client area:
// * First, the inactive tabs are proportionally reduced,
// and the selected tab is given its desired width
// * Once the smallest inactive tab would be too small,
// the inactive tabs are no longer made proportional to
// their desired size, but are all made the same size.
// The selected tab is still given its desired width.
// * Once there's not enough room to show the selected tab
// at its desired width and all the inactive tabs at
// the same minimum width, all of the tabs are made
// the same width (both the selected and inactive tabs)
// NOTE: This is not the approach VS.Net takes. VS.Net
// first gives away the real estate for the widest tabs
// until all the tabs are the same width. If you'd rather
// have that approach, create a new class that inherits
// from CDotNetTabCtrl/CDotNetButtonTabCtrl and override
// UpdateLayout with your implementation.
// 2002/04/17: Daniel Bowen (DDB)
// - Owen Gunter [OwenG@d-graphic.co.uk] pointed out that the
// tab background and font height of CDotNetTabCtrl didn't match
// what he saw in the tabs under his version of Visual Studio.
// When I originally chose those, I was running Visual Studio
// RC1 under Windows XP with the Windows XP theme and the
// silver color scheme and large fonts. It wasn't clear to me
// at the time if the tab background color was dependant on a
// system color (it didn't seem to be) or if the font was dependant
// on a system metric (I had changed the caption font and saw
// it didn't change).
// I've now revisited the issue, and there's now a much better
// approximation of what Visual Studio.Net is doing.
// * The tab font is the "ICON" font, which can be retrieved
// by calling SystemParametersInfo with SPI_GETICONMETRICS.
// CDotNetTabCtrl and CDotNetButtonTabCtrl now use this
// font instead of a hardcoded 9 point Tahoma.
// * The tab background is a "lightened" version of COLOR_BTNFACE.
// The formula used in CDotNetTabCtrl isn't exactly the same
// formula that VS.Net uses, but from my experiments, its
// never more than 1 off for red, green, or blue
// (with each of these being 0-255)
// * The "inactive tab" text color is a "darkened" version of
// COLOR_GRAYTEXT. Again, the formula is an approximation
// to what VS.Net is doing, but its seems to be very close.
// * CDotNetTabCtrl was doing some outlines with a black ben
// and a white pen. After some experiments, I found that
// VS.Net was actually using COLOR_BTNTEXT and COLOR_BTNHIGHLIGHT.
// I've updated CDotNetTabCtrl to do the same.
// 2002/01/30: Daniel Bowen (DDB)
// - Added my version of CDotNetTabCtrl based on Pascal's
// * Added support for divider lines between tabs
// * Closer match to look of tabs used in VS.Net
// * Support for bolding text of selected tab
// - Added CDotNetButtonTabCtrl (to look like VS.Net
// view of HTML with the Design/HTML buttons)
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