Trackbar update
Dimitrie O. Paun
dpaun at rogers.com
Wed Sep 11 12:30:08 CDT 2002
Just to break the "just talk, no code" we're in :)
ChangeLog:
Greatly improved drawing code: eliminates all flicker,
faster, cleaner tics drawing, better tooltip positioning,
code cleanups and simplifications.
Index: dlls/comctl32/trackbar.c
===================================================================
RCS file: /var/cvs/wine/dlls/comctl32/trackbar.c,v
retrieving revision 1.37
diff -u -r1.37 trackbar.c
--- dlls/comctl32/trackbar.c 11 Sep 2002 00:47:32 -0000 1.37
+++ dlls/comctl32/trackbar.c 11 Sep 2002 17:06:19 -0000
@@ -66,7 +66,7 @@
#define TB_REFRESH_TIMER 1
#define TB_REFRESH_DELAY 500
-#define TOOLTIP_OFFSET 15 /* distance from thumb to tooltip */
+#define TOOLTIP_OFFSET 2 /* distance from ctrl edge to tooltip */
/* Used by TRACKBAR_Refresh to find out which parts of the control
need to be recalculated */
@@ -276,6 +276,12 @@
TRACKBAR_CalcThumb(infoPtr, infoPtr->lPos, &infoPtr->rcThumb);
}
+static inline void
+TRACKBAR_InvalidateAll(TRACKBAR_INFO * infoPtr)
+{
+ InvalidateRect(infoPtr->hwndSelf, NULL, FALSE);
+}
+
static void
TRACKBAR_InvalidateThumbMove (TRACKBAR_INFO *infoPtr, LONG oldPos, LONG newPos)
{
@@ -286,8 +292,8 @@
TRACKBAR_CalcThumb(infoPtr, newPos, &newThumb);
InflateRect(&oldThumb, 1, 1);
InflateRect(&newThumb, 1, 1);
- InvalidateRect(infoPtr->hwndSelf, &oldThumb, TRUE);
- InvalidateRect(infoPtr->hwndSelf, &newThumb, TRUE);
+ InvalidateRect(infoPtr->hwndSelf, &oldThumb, FALSE);
+ InvalidateRect(infoPtr->hwndSelf, &newThumb, FALSE);
}
static BOOL inline
@@ -355,8 +361,7 @@
static void
TRACKBAR_DrawTic (TRACKBAR_INFO *infoPtr, HDC hdc, LONG ticPos, int flags)
{
- int x, y, range, side, offset = 5, indent = 0, len = 3, i;
- COLORREF clrTic = GetTextColor(hdc);
+ int x, y, ox, oy, range, side, offset = 5, indent = 0, len = 3;
RECT rcTics;
TRACE("\n");
@@ -400,29 +405,28 @@
y -= (offset + 2) * side;
}
- for(i = 0; i < len; i++) {
- SetPixel(hdc, x, y, clrTic);
- if (flags & TBS_VERT) x += side;
- else y += side;
- }
-
+ ox = x;
+ oy = y;
+ MoveToEx(hdc, x, y, 0);
+ if (flags & TBS_VERT) x += len * side;
+ else y += len * side;
+ LineTo(hdc, x, y);
+
if (flags & TIC_SELECTIONMARK) {
if (flags & TBS_VERT) {
- x -= 2 * side;
- y += indent;
- SetPixel(hdc, x, y, clrTic);
- x += side;
- SetPixel(hdc, x, y, clrTic);
- y += indent;
+ x -= side;
+ } else {
+ y -= side;
+ }
+ MoveToEx(hdc, x, y, 0);
+ if (flags & TBS_VERT) {
+ y += 2 * indent;
} else {
- x += indent;
- y -= 2 * side;
- SetPixel(hdc, x, y, clrTic);
- y += side;
- SetPixel(hdc, x, y, clrTic);
- x += indent;
+ x += 2 * indent;
}
- SetPixel(hdc, x, y, clrTic);
+
+ LineTo(hdc, x, y);
+ LineTo(hdc, ox, oy);
}
}
@@ -442,16 +446,16 @@
static void
TRACKBAR_DrawThumb(TRACKBAR_INFO *infoPtr, HDC hdc, DWORD dwStyle)
{
- HBRUSH oldbr,hbr = GetSysColorBrush(COLOR_BTNFACE);
- HPEN oldpen=(HPEN)NULL,hpn;
+ HBRUSH oldbr;
+ HPEN oldpen;
RECT thumb = infoPtr->rcThumb;
- int BlackUntil=3;
- int PointCount=6;
+ int BlackUntil = 3;
+ int PointCount = 6;
POINT points[6];
static INT PointDepth = 4;
- oldbr = SelectObject (hdc, hbr);
+ oldbr = SelectObject (hdc, GetSysColorBrush(COLOR_BTNFACE));
SetPolyFillMode (hdc, WINDING);
if (dwStyle & TBS_BOTH)
@@ -542,37 +546,14 @@
}
- /*
- * Fill the shape
- */
+ /* Draw the thumb now */
Polygon (hdc, points, PointCount);
-
- /*
- * Draw the edge
- */
- hpn = GetStockObject(BLACK_PEN);
- oldpen = SelectObject(hdc,hpn);
-
- /*
- * Black part
- */
- Polyline(hdc,points,BlackUntil);
-
- SelectObject(hdc,oldpen);
- hpn = GetStockObject(WHITE_PEN);
- SelectObject(hdc,hpn);
-
- /*
- * White Part
- */
+ oldpen = SelectObject(hdc, GetStockObject(BLACK_PEN));
+ Polyline(hdc,points, BlackUntil);
+ SelectObject(hdc, GetStockObject(WHITE_PEN));
Polyline(hdc, &points[BlackUntil-1], PointCount+1-BlackUntil);
-
- /*
- * restore the brush and pen
- */
- SelectObject(hdc,oldbr);
- if (oldpen)
- SelectObject(hdc,oldpen);
+ SelectObject(hdc, oldpen);
+ SelectObject(hdc, oldbr);
}
@@ -598,6 +579,7 @@
WCHAR buf[80], fmt[] = { '%', 'l', 'd', 0 };
TTTOOLINFOW ti;
POINT pt;
+ RECT rcClient;
LRESULT size;
if (!infoPtr->hwndToolTip) return;
@@ -611,18 +593,19 @@
ti.lpszText = buf;
SendMessageW (infoPtr->hwndToolTip, TTM_UPDATETIPTEXTW, 0, (LPARAM)&ti);
+ GetClientRect (infoPtr->hwndSelf, &rcClient);
size = SendMessageW (infoPtr->hwndToolTip, TTM_GETBUBBLESIZE, 0, (LPARAM)&ti);
if (dwStyle & TBS_VERT) {
if (infoPtr->fLocation == TBTS_LEFT)
- pt.x = infoPtr->rcThumb.left - LOWORD(size) - TOOLTIP_OFFSET;
+ pt.x = 0 - LOWORD(size) - TOOLTIP_OFFSET;
else
- pt.x = infoPtr->rcThumb.right + TOOLTIP_OFFSET;
+ pt.x = rcClient.right + TOOLTIP_OFFSET;
pt.y = (infoPtr->rcThumb.top + infoPtr->rcThumb.bottom - HIWORD(size))/2;
} else {
if (infoPtr->fLocation == TBTS_TOP)
- pt.y = infoPtr->rcThumb.top - HIWORD(size) - TOOLTIP_OFFSET;
+ pt.y = 0 - HIWORD(size) - TOOLTIP_OFFSET;
else
- pt.y = infoPtr->rcThumb.bottom + TOOLTIP_OFFSET;
+ pt.y = rcClient.bottom + TOOLTIP_OFFSET;
pt.x = (infoPtr->rcThumb.left + infoPtr->rcThumb.right - LOWORD(size))/2;
}
ClientToScreen(infoPtr->hwndSelf, &pt);
@@ -633,10 +616,12 @@
static void
-TRACKBAR_Refresh (TRACKBAR_INFO *infoPtr, HDC hdc)
+TRACKBAR_Refresh (TRACKBAR_INFO *infoPtr, HDC hdcDst)
{
DWORD dwStyle = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
- RECT rcChannel = infoPtr->rcChannel;
+ RECT rcClient, rcChannel = infoPtr->rcChannel;
+ HDC hdc;
+ HBITMAP hOldBmp = 0, hOffScreenBmp = 0;
int i;
if (infoPtr->flags & TB_THUMBCHANGED) {
@@ -650,12 +635,29 @@
if (infoPtr->flags & TB_DRAG_MODE)
TRACKBAR_UpdateToolTip (infoPtr);
+ GetClientRect (infoPtr->hwndSelf, &rcClient);
+
+ /* try to render offscreen, if we fail, carrry onscreen */
+ hdc = CreateCompatibleDC(hdcDst);
+ if (hdc) {
+ hOffScreenBmp = CreateCompatibleBitmap(hdcDst, rcClient.right, rcClient.bottom);
+ if (hOffScreenBmp) {
+ hOldBmp = SelectObject(hdc, hOffScreenBmp);
+ } else {
+ DeleteObject(hdc);
+ hdc = hdcDst;
+ }
+ } else {
+ hdc = hdcDst;
+ }
+
infoPtr->flags &= ~ (TB_THUMBCHANGED | TB_SELECTIONCHANGED);
+ /* Erase backbround */
+ FillRect (hdc, &rcClient, GetSysColorBrush(COLOR_BTNFACE));
+
/* draw channel */
-
DrawEdge (hdc, &rcChannel, EDGE_SUNKEN, BF_RECT | BF_ADJUST);
-
if (dwStyle & TBS_ENABLESELRANGE) { /* fill the channel */
FillRect (hdc, &rcChannel, GetStockObject(WHITE_BRUSH));
if (TRACKBAR_HasSelection(infoPtr))
@@ -664,10 +666,13 @@
/* draw tics */
-
if (!(dwStyle & TBS_NOTICKS)) {
int ticFlags = dwStyle & 0x0f;
- COLORREF oldFg = SetTextColor(hdc, GetSysColor (COLOR_3DDKSHADOW));
+ LOGPEN ticPen = { PS_SOLID, {1, 0}, GetSysColor (COLOR_3DDKSHADOW) };
+ HPEN hOldPen, hTicPen;
+
+ hTicPen = CreatePenIndirect(&ticPen);
+ hOldPen = hTicPen ? SelectObject(hdc, hTicPen) : 0;
for (i=0; i<infoPtr->uNumTics; i++)
TRACKBAR_DrawTics (infoPtr, hdc, infoPtr->tics[i], ticFlags);
@@ -681,14 +686,20 @@
TRACKBAR_DrawTics (infoPtr, hdc, infoPtr->lSelMax,
ticFlags | TIC_SELECTIONMARKMAX);
}
- SetTextColor(hdc, oldFg);
+ if (hTicPen) SelectObject(hdc, hOldPen);
}
/* draw thumb */
-
if (!(dwStyle & TBS_NOTHUMB))
- TRACKBAR_DrawThumb(infoPtr,hdc,dwStyle);
+ TRACKBAR_DrawThumb(infoPtr, hdc, dwStyle);
+ /* cleanup, if we rendered offscreen */
+ if (hdc != hdcDst) {
+ BitBlt(hdcDst, 0, 0, rcClient.right, rcClient.bottom, hdc, 0, 0, SRCCOPY);
+ SelectObject(hdc, hOldBmp);
+ DeleteObject(hOffScreenBmp);
+ DeleteObject(hdc);
+ }
}
@@ -752,8 +763,7 @@
infoPtr->lSelMax = 0;
infoPtr->flags |= TB_SELECTIONCHANGED;
- if (fRedraw)
- InvalidateRect (infoPtr->hwndSelf, NULL, TRUE);
+ if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
return 0;
}
@@ -768,8 +778,7 @@
infoPtr->uNumTics = 0;
}
- if (fRedraw)
- InvalidateRect (infoPtr->hwndSelf, NULL, TRUE);
+ if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
return 0;
}
@@ -886,6 +895,7 @@
static LRESULT inline
TRACKBAR_SetPos (TRACKBAR_INFO *infoPtr, BOOL fPosition, LONG lPosition)
{
+ LONG oldPos = infoPtr->lPos;
infoPtr->lPos = lPosition;
if (infoPtr->lPos < infoPtr->lRangeMin)
@@ -895,8 +905,7 @@
infoPtr->lPos = infoPtr->lRangeMax;
infoPtr->flags |= TB_THUMBPOSCHANGED;
- if (fPosition)
- InvalidateRect (infoPtr->hwndSelf, NULL, TRUE);
+ if (fPosition) TRACKBAR_InvalidateThumbMove(infoPtr, oldPos, lPosition);
return 0;
}
@@ -921,8 +930,7 @@
infoPtr->lPageSize = (infoPtr->lRangeMax - infoPtr->lRangeMin) / 5;
if (infoPtr->lPageSize == 0) infoPtr->lPageSize = 1;
- if (fRedraw)
- InvalidateRect (infoPtr->hwndSelf, NULL, TRUE);
+ if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
return 0;
}
@@ -940,8 +948,7 @@
infoPtr->lPageSize = (infoPtr->lRangeMax - infoPtr->lRangeMin) / 5;
if (infoPtr->lPageSize == 0) infoPtr->lPageSize = 1;
- if (fRedraw)
- InvalidateRect (infoPtr->hwndSelf, NULL, TRUE);
+ if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
return 0;
}
@@ -959,8 +966,7 @@
infoPtr->lPageSize = (infoPtr->lRangeMax - infoPtr->lRangeMin) / 5;
if (infoPtr->lPageSize == 0) infoPtr->lPageSize = 1;
- if (fRedraw)
- InvalidateRect (infoPtr->hwndSelf, NULL, TRUE);
+ if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
return 0;
}
@@ -981,8 +987,7 @@
if (infoPtr->lSelMax > infoPtr->lRangeMax)
infoPtr->lSelMax = infoPtr->lRangeMax;
- if (fRedraw)
- InvalidateRect (infoPtr->hwndSelf, NULL, TRUE);
+ if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
return 0;
}
@@ -1000,8 +1005,7 @@
if (infoPtr->lSelMax > infoPtr->lRangeMax)
infoPtr->lSelMax = infoPtr->lRangeMax;
- if (fRedraw)
- InvalidateRect (infoPtr->hwndSelf, NULL, TRUE);
+ if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
return 0;
}
@@ -1019,8 +1023,7 @@
if (infoPtr->lSelMin < infoPtr->lRangeMin)
infoPtr->lSelMin = infoPtr->lRangeMin;
- if (fRedraw)
- InvalidateRect (infoPtr->hwndSelf, NULL, TRUE);
+ if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
return 0;
}
@@ -1034,7 +1037,7 @@
infoPtr->flags |= TB_THUMBSIZECHANGED;
- InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, TRUE);
+ InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
return 0;
}
@@ -1061,7 +1064,7 @@
}
infoPtr->tics[infoPtr->uNumTics-1] = lPos;
- InvalidateRect (infoPtr->hwndSelf, NULL, TRUE);
+ TRACKBAR_InvalidateAll(infoPtr);
return TRUE;
}
@@ -1073,7 +1076,7 @@
if (GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_AUTOTICKS) {
infoPtr->uTicFreq = wFreq;
TRACKBAR_RecalculateTics (infoPtr);
- InvalidateRect (infoPtr->hwndSelf, NULL, TRUE);
+ TRACKBAR_InvalidateAll(infoPtr);
}
return 0;
@@ -1202,30 +1205,11 @@
static LRESULT
-TRACKBAR_EraseBkgnd (TRACKBAR_INFO *infoPtr, HDC hdc)
-{
- NMCUSTOMDRAW nmcd;
-
- ZeroMemory(&nmcd, sizeof(NMCUSTOMDRAW));
- nmcd.hdc = hdc;
-
- nmcd.dwDrawStage = CDDS_PREERASE;
- if (send_notify(infoPtr->hwndSelf, NM_CUSTOMDRAW, &nmcd.hdr) != CDRF_SKIPDEFAULT)
- DefWindowProcW (infoPtr->hwndSelf, WM_ERASEBKGND, (WPARAM)hdc, 0);
-
- nmcd.dwDrawStage = CDDS_POSTERASE;
- send_notify(infoPtr->hwndSelf, NM_CUSTOMDRAW, &nmcd.hdr);
-
- return 0;
-}
-
-
-static LRESULT
TRACKBAR_KillFocus (TRACKBAR_INFO *infoPtr, HWND hwndGetFocus)
{
TRACE("\n");
- InvalidateRect (infoPtr->hwndSelf, NULL, TRUE);
+ TRACKBAR_InvalidateAll(infoPtr);
return 0;
}
@@ -1305,7 +1289,7 @@
{
TRACE("\n");
- InvalidateRect (infoPtr->hwndSelf, NULL, TRUE);
+ TRACKBAR_InvalidateAll(infoPtr);
return 0;
}
@@ -1592,7 +1576,7 @@
/* case WM_ENABLE: */
case WM_ERASEBKGND:
- return TRACKBAR_EraseBkgnd(infoPtr, (HDC)wParam);
+ return 0;
case WM_GETDLGCODE:
return DLGC_WANTARROWS;
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