X-Git-Url: https://repo.or.cz/w/wmaker-crm.git/blobdiff_plain/59fc927dc9f183802621138534fa6eaafe5593ba..688a56e8ab67b56550e2874d9d7423f0d435bfd9:/WINGs/wscrollview.c

diff --git a/WINGs/wscrollview.c b/WINGs/wscrollview.c
dissimilarity index 97%
index 0285a237..7733e27c 100644
--- a/WINGs/wscrollview.c
+++ b/WINGs/wscrollview.c
@@ -1,634 +1,563 @@
-
-
-
-
-#include "WINGsP.h"
-
-
-typedef struct W_ScrollView {
-    W_Class widgetClass;
-    WMView *view;
-
-    WMView *contentView;
-    WMView *viewport;
-
-    WMScroller *vScroller;
-    WMScroller *hScroller;
-
-    short lineScroll;
-    short pageScroll;
-
-    struct {
-        WMReliefType relief:3;
-        unsigned int hasVScroller:1;
-        unsigned int hasHScroller:1;
-
-    } flags;
-
-} ScrollView;
-
-
-
-
-static void destroyScrollView(ScrollView *sPtr);
-
-static void paintScrollView(ScrollView *sPtr);
-static void handleEvents(XEvent *event, void *data);
-static void handleViewportEvents(XEvent *event, void *data);
-static void resizeScrollView();
-static void updateScrollerProportion();
-
-W_ViewDelegate _ScrollViewViewDelegate = {
-    NULL,
-    NULL,
-    resizeScrollView,
-    NULL,
-    NULL
-};
-
-
-
-WMScrollView*
-WMCreateScrollView(WMWidget *parent)
-{
-    ScrollView *sPtr;
-
-    sPtr = wmalloc(sizeof(ScrollView));
-    memset(sPtr, 0, sizeof(ScrollView));
-
-    sPtr->widgetClass = WC_ScrollView;
-
-    sPtr->view = W_CreateView(W_VIEW(parent));
-    if (!sPtr->view) {
-        wfree(sPtr);
-        return NULL;
-    }
-    sPtr->viewport = W_CreateView(sPtr->view);
-    if (!sPtr->viewport) {
-        W_DestroyView(sPtr->view);
-        wfree(sPtr);
-        return NULL;
-    }
-    sPtr->view->self = sPtr;
-    sPtr->viewport->self = sPtr;
-
-    sPtr->view->delegate = &_ScrollViewViewDelegate;
-
-    sPtr->viewport->flags.mapWhenRealized = 1;
-
-    WMCreateEventHandler(sPtr->view, StructureNotifyMask|ExposureMask,
-                         handleEvents, sPtr);
-    WMCreateEventHandler(sPtr->viewport, SubstructureNotifyMask,
-                         handleViewportEvents, sPtr);
-
-    sPtr->lineScroll = 4;
-
-    sPtr->pageScroll = 0;
-
-    return sPtr;
-}
-
-
-static void
-applyScrollerValues(WMScrollView *sPtr)
-{
-    int x, y;
-
-    if (sPtr->contentView == NULL)
-        return;
-
-    if (sPtr->flags.hasHScroller) {
-        float v = WMGetScrollerValue(sPtr->hScroller);
-        int size;
-
-        size = sPtr->contentView->size.width-sPtr->viewport->size.width;
-
-        x = v * size;
-    } else {
-        x = 0;
-    }
-
-    if (sPtr->flags.hasVScroller) {
-        float v = WMGetScrollerValue(sPtr->vScroller);
-
-        int size;
-
-        size = sPtr->contentView->size.height-sPtr->viewport->size.height;
-
-        y = v * size;
-    } else {
-        y = 0;
-    }
-
-
-
-    x = WMAX(0, x);
-    y = WMAX(0, y);
-
-    W_MoveView(sPtr->contentView, -x, -y);
-
-    W_RaiseView(sPtr->viewport);
-}
-
-
-static void
-reorganizeInterior(WMScrollView *sPtr)
-{
-    int hx, hy, hw;
-    int vx, vy, vh;
-    int cx, cy, cw, ch;
-
-
-    cw = hw = sPtr->view->size.width;
-    vh = ch = sPtr->view->size.height;
-
-    if (sPtr->flags.relief == WRSimple) {
-        cw -= 2;
-        ch -= 2;
-        cx = 1;
-        cy = 1;
-    } else if (sPtr->flags.relief != WRFlat) {
-        cw -= 3;
-        ch -= 3;
-        cx = 2;
-        cy = 2;
-    } else {
-        cx = 0;
-        cy = 0;
-    }
-
-    if (sPtr->flags.hasHScroller) {
-        int h = 20;
-
-        ch -= h;
-
-        if (sPtr->flags.relief == WRSimple) {
-            hx = 0;
-            hy = sPtr->view->size.height - h;
-        } else if (sPtr->flags.relief != WRFlat) {
-            hx = 1;
-            hy = sPtr->view->size.height - h - 1;
-            hw -= 2;
-        } else {
-            hx = 0;
-            hy = sPtr->view->size.height - h;
-        }
-    } else {
-        /* make compiler shutup */
-        hx = 0;
-        hy = 0;
-    }
-
-    if (sPtr->flags.hasVScroller) {
-        int w = 20;
-        cw -= w;
-        cx += w;
-        hx += w - 1;
-        hw -= w - 1;
-
-        if (sPtr->flags.relief == WRSimple) {
-            vx = 0;
-            vy = 0;
-        } else if (sPtr->flags.relief != WRFlat) {
-            vx = 1;
-            vy = 1;
-            vh -= 2;
-        } else {
-            vx = 0;
-            vy = 0;
-        }
-    } else {
-        /* make compiler shutup */
-        vx = 0;
-        vy = 0;
-    }
-
-    W_ResizeView(sPtr->viewport, cw, ch);
-    W_MoveView(sPtr->viewport, cx, cy);
-
-    if (sPtr->flags.hasHScroller) {
-        WMResizeWidget(sPtr->hScroller, hw, 20);
-        WMMoveWidget(sPtr->hScroller, hx, hy);
-    }
-    if (sPtr->flags.hasVScroller) {
-        WMResizeWidget(sPtr->vScroller, 20, vh);
-        WMMoveWidget(sPtr->vScroller, vx, vy);
-    }
-
-    applyScrollerValues(sPtr);
-}
-
-
-static void
-resizeScrollView(W_ViewDelegate *self, WMView *view)
-{
-    reorganizeInterior(view->self);
-    updateScrollerProportion(view->self);
-}
-
-
-
-void
-WMResizeScrollViewContent(WMScrollView *sPtr, unsigned int width,
-                          unsigned int height)
-{
-    int w, h, x;
-
-    w = width;
-    h = height;
-
-    x = 0;
-    if (sPtr->flags.relief == WRSimple) {
-        w += 2;
-        h += 2;
-    } else if (sPtr->flags.relief != WRFlat) {
-        w += 4;
-        h += 4;
-        x = 1;
-    }
-
-    if (sPtr->flags.hasVScroller) {
-        WMResizeWidget(sPtr->vScroller, 20, h);
-        width -= W_VIEW(sPtr->vScroller)->size.width;
-    }
-
-    if (sPtr->flags.hasHScroller) {
-        WMResizeWidget(sPtr->hScroller, w, 20);
-        WMMoveWidget(sPtr->hScroller, x, h);
-        height -= W_VIEW(sPtr->hScroller)->size.height;
-    }
-
-    W_ResizeView(sPtr->view, w, h);
-
-    W_ResizeView(sPtr->viewport, width, height);
-}
-
-
-void
-WMSetScrollViewLineScroll(WMScrollView *sPtr, int amount)
-{
-    assert(amount > 0);
-
-    sPtr->lineScroll = amount;
-}
-
-
-void
-WMSetScrollViewPageScroll(WMScrollView *sPtr, int amount)
-{
-    assert(amount >= 0);
-
-    sPtr->pageScroll = amount;
-}
-
-
-WMRect
-WMGetScrollViewVisibleRect(WMScrollView *sPtr)
-{
-    WMRect rect;
-
-    rect.pos.x = -sPtr->contentView->pos.x;
-    rect.pos.y = -sPtr->contentView->pos.y;
-    rect.size = sPtr->viewport->size;
-
-    return rect;
-}
-
-
-void
-WMScrollViewScrollPoint(WMScrollView *sPtr, WMPoint point)
-{
-    float xsize, ysize;
-    float xpos, ypos;
-
-    xsize = sPtr->contentView->size.width-sPtr->viewport->size.width;
-    ysize = sPtr->contentView->size.height-sPtr->viewport->size.height;
-
-    xpos = point.x / xsize;
-    ypos = point.y / ysize;
-
-    if (sPtr->hScroller)
-        WMSetScrollerParameters(sPtr->hScroller, xpos,
-                                WMGetScrollerKnobProportion(sPtr->hScroller));
-    if (sPtr->vScroller)
-        WMSetScrollerParameters(sPtr->vScroller, ypos,
-                                WMGetScrollerKnobProportion(sPtr->vScroller));
-
-    W_MoveView(sPtr->contentView, -point.x, -point.y);
-}
-
-
-static void
-doScrolling(WMWidget *self, void *data)
-{
-    ScrollView *sPtr = (ScrollView*)data;
-    float value;
-    int pos;
-    int vpsize;
-    float size;
-
-    if (sPtr->hScroller == (WMScroller *)self) {
-        pos = -sPtr->contentView->pos.x;
-        size = sPtr->contentView->size.width-sPtr->viewport->size.width;
-        vpsize = sPtr->viewport->size.width - sPtr->pageScroll;
-    } else {
-        pos = -sPtr->contentView->pos.y;
-        size = sPtr->contentView->size.height-sPtr->viewport->size.height;
-        vpsize = sPtr->viewport->size.height - sPtr->pageScroll;
-    }
-    if (vpsize <= 0)
-        vpsize = 1;
-
-    switch (WMGetScrollerHitPart(self)) {
-    case WSDecrementLine:
-        if (pos > 0) {
-            pos-=sPtr->lineScroll;
-            if (pos < 0)
-                pos = 0;
-            value = (float)pos / size;
-            WMSetScrollerParameters(self, value,
-                                    WMGetScrollerKnobProportion(self));
-        }
-        break;
-    case WSIncrementLine:
-        if (pos < size) {
-            pos+=sPtr->lineScroll;
-            if (pos > size)
-                pos = size;
-            value = (float)pos / size;
-            WMSetScrollerParameters(self, value,
-                                    WMGetScrollerKnobProportion(self));
-        }
-        break;
-
-    case WSKnob:
-        value = WMGetScrollerValue(self);
-        pos = value*size;
-        break;
-
-    case WSDecrementPage:
-        if (pos > 0) {
-            pos -= vpsize;
-            if (pos < 0)
-                pos = 0;
-            value = (float)pos / size;
-            WMSetScrollerParameters(self, value,
-                                    WMGetScrollerKnobProportion(self));
-        }
-        break;
-
-    case WSDecrementWheel:
-        if (pos > 0) {
-            pos -= vpsize/3;
-            if (pos < 0)
-                pos = 0;
-            value = (float)pos / size;
-            WMSetScrollerParameters(self, value,
-                                    WMGetScrollerKnobProportion(self));
-        }
-        break;
-
-    case WSIncrementPage:
-        if (pos < size) {
-            pos += vpsize;
-            if (pos > size)
-                pos = size;
-            value = (float)pos / size;
-            WMSetScrollerParameters(self, value,
-                                    WMGetScrollerKnobProportion(self));
-        }
-        break;
-
-    case WSIncrementWheel:
-        if (pos < size) {
-            pos += vpsize/3;
-            if (pos > size)
-                pos = size;
-            value = (float)pos / size;
-            WMSetScrollerParameters(self, value,
-                                    WMGetScrollerKnobProportion(self));
-        }
-        break;
-
-    case WSNoPart:
-    case WSKnobSlot:
-        break;
-    }
-
-    if (sPtr->hScroller == (WMScroller *)self) {
-        W_MoveView(sPtr->contentView, -pos, sPtr->contentView->pos.y);
-    } else {
-        W_MoveView(sPtr->contentView, sPtr->contentView->pos.x, -pos);
-    }
-}
-
-
-WMScroller*
-WMGetScrollViewHorizontalScroller(WMScrollView *sPtr)
-{
-    return sPtr->hScroller;
-}
-
-
-
-WMScroller*
-WMGetScrollViewVerticalScroller(WMScrollView *sPtr)
-{
-    return sPtr->vScroller;
-}
-
-
-void
-WMSetScrollViewHasHorizontalScroller(WMScrollView *sPtr, Bool flag)
-{
-    if (flag) {
-        if (sPtr->flags.hasHScroller)
-            return;
-        sPtr->flags.hasHScroller = 1;
-
-        sPtr->hScroller = WMCreateScroller(sPtr);
-        WMSetScrollerAction(sPtr->hScroller, doScrolling, sPtr);
-        /* make it a horiz. scroller */
-        WMResizeWidget(sPtr->hScroller, 2, 1);
-
-        if (W_VIEW_REALIZED(sPtr->view)) {
-            WMRealizeWidget(sPtr->hScroller);
-        }
-
-        reorganizeInterior(sPtr);
-
-        WMMapWidget(sPtr->hScroller);
-    } else {
-        if (!sPtr->flags.hasHScroller)
-            return;
-
-        WMUnmapWidget(sPtr->hScroller);
-        WMDestroyWidget(sPtr->hScroller);
-        sPtr->hScroller = NULL;
-        sPtr->flags.hasHScroller = 0;
-
-        reorganizeInterior(sPtr);
-    }
-}
-
-
-void
-WMSetScrollViewHasVerticalScroller(WMScrollView *sPtr, Bool flag)
-{
-    if (flag) {
-        if (sPtr->flags.hasVScroller)
-            return;
-        sPtr->flags.hasVScroller = 1;
-
-        sPtr->vScroller = WMCreateScroller(sPtr);
-        WMSetScrollerAction(sPtr->vScroller, doScrolling, sPtr);
-        WMSetScrollerArrowsPosition(sPtr->vScroller, WSAMaxEnd);
-        /* make it a vert. scroller */
-        WMResizeWidget(sPtr->vScroller, 1, 2);
-
-        if (W_VIEW_REALIZED(sPtr->view)) {
-            WMRealizeWidget(sPtr->vScroller);
-        }
-
-        reorganizeInterior(sPtr);
-
-        WMMapWidget(sPtr->vScroller);
-    } else {
-        if (!sPtr->flags.hasVScroller)
-            return;
-        sPtr->flags.hasVScroller = 0;
-
-        WMUnmapWidget(sPtr->vScroller);
-        WMDestroyWidget(sPtr->vScroller);
-        sPtr->vScroller = NULL;
-
-        reorganizeInterior(sPtr);
-    }
-}
-
-
-void
-WMSetScrollViewContentView(WMScrollView *sPtr, WMView *view)
-{
-    assert(sPtr->contentView == NULL);
-
-    sPtr->contentView = view;
-
-    W_ReparentView(sPtr->contentView, sPtr->viewport, 0, 0);
-
-    if (sPtr->flags.hasHScroller) {
-        float prop;
-
-        prop = (float)sPtr->viewport->size.width/sPtr->contentView->size.width;
-        WMSetScrollerParameters(sPtr->hScroller, 0, prop);
-    }
-    if (sPtr->flags.hasVScroller) {
-        float prop;
-
-        prop = (float)sPtr->viewport->size.height/sPtr->contentView->size.height;
-
-        WMSetScrollerParameters(sPtr->vScroller, 0, prop);
-    }
-}
-
-
-void
-WMSetScrollViewRelief(WMScrollView *sPtr, WMReliefType type)
-{
-    sPtr->flags.relief = type;
-
-    reorganizeInterior(sPtr);
-
-    if (sPtr->view->flags.mapped)
-        paintScrollView(sPtr);
-
-
-}
-
-
-
-static void
-paintScrollView(ScrollView *sPtr)
-{
-    W_DrawRelief(sPtr->view->screen, sPtr->view->window, 0, 0,
-                 sPtr->view->size.width, sPtr->view->size.height,
-                 sPtr->flags.relief);
-}
-
-
-static void
-updateScrollerProportion(ScrollView *sPtr)
-{
-    float prop, value;
-    float oldV, oldP;
-
-    if (sPtr->flags.hasHScroller) {
-        oldV = WMGetScrollerValue(sPtr->hScroller);
-        oldP = WMGetScrollerKnobProportion(sPtr->hScroller);
-
-        prop = (float)sPtr->viewport->size.width/(float)sPtr->contentView->size.width;
-
-        if (oldP == 1.0)
-            value = 0;
-        else
-            value = (prop * oldV) / oldP;
-        WMSetScrollerParameters(sPtr->hScroller, value, prop);
-    }
-    if (sPtr->flags.hasVScroller) {
-        oldV = WMGetScrollerValue(sPtr->vScroller);
-        oldP = WMGetScrollerKnobProportion(sPtr->vScroller);
-
-        prop = (float)sPtr->viewport->size.height/(float)sPtr->contentView->size.height;
-
-        if (oldP == 1.0)
-            value = 0;
-        else
-            value = (prop * oldV) / oldP;
-        WMSetScrollerParameters(sPtr->vScroller, value, prop);
-    }
-    applyScrollerValues(sPtr);
-}
-
-
-static void
-handleViewportEvents(XEvent *event, void *data)
-{
-    ScrollView *sPtr = (ScrollView*)data;
-
-    if (sPtr->contentView
-        && event->xconfigure.window == sPtr->contentView->window)
-        updateScrollerProportion(sPtr);
-}
-
-
-static void
-handleEvents(XEvent *event, void *data)
-{
-    ScrollView *sPtr = (ScrollView*)data;
-
-    CHECK_CLASS(data, WC_ScrollView);
-
-    switch (event->type) {
-    case Expose:
-        if (event->xexpose.count!=0)
-            break;
-        if (event->xexpose.serial == 0) /* means it's artificial */
-            W_RedisplayView(sPtr->contentView);
-        else
-            paintScrollView(sPtr);
-        break;
-
-    case DestroyNotify:
-        destroyScrollView(sPtr);
-        break;
-
-    }
-}
-
-
-static void
-destroyScrollView(ScrollView *sPtr)
-{
-    wfree(sPtr);
-}
-
+
+#include "WINGsP.h"
+
+typedef struct W_ScrollView {
+	W_Class widgetClass;
+	WMView *view;
+
+	WMView *contentView;
+	WMView *viewport;
+
+	WMScroller *vScroller;
+	WMScroller *hScroller;
+
+	short lineScroll;
+	short pageScroll;
+
+	struct {
+		WMReliefType relief:3;
+		unsigned int hasVScroller:1;
+		unsigned int hasHScroller:1;
+
+	} flags;
+
+} ScrollView;
+
+static void destroyScrollView(ScrollView * sPtr);
+
+static void paintScrollView(ScrollView * sPtr);
+static void handleEvents(XEvent * event, void *data);
+static void handleViewportEvents(XEvent * event, void *data);
+static void resizeScrollView();
+static void updateScrollerProportion();
+
+W_ViewDelegate _ScrollViewViewDelegate = {
+	NULL,
+	NULL,
+	resizeScrollView,
+	NULL,
+	NULL
+};
+
+WMScrollView *WMCreateScrollView(WMWidget * parent)
+{
+	ScrollView *sPtr;
+
+	sPtr = wmalloc(sizeof(ScrollView));
+	memset(sPtr, 0, sizeof(ScrollView));
+
+	sPtr->widgetClass = WC_ScrollView;
+
+	sPtr->view = W_CreateView(W_VIEW(parent));
+	if (!sPtr->view) {
+		wfree(sPtr);
+		return NULL;
+	}
+	sPtr->viewport = W_CreateView(sPtr->view);
+	if (!sPtr->viewport) {
+		W_DestroyView(sPtr->view);
+		wfree(sPtr);
+		return NULL;
+	}
+	sPtr->view->self = sPtr;
+	sPtr->viewport->self = sPtr;
+
+	sPtr->view->delegate = &_ScrollViewViewDelegate;
+
+	sPtr->viewport->flags.mapWhenRealized = 1;
+
+	WMCreateEventHandler(sPtr->view, StructureNotifyMask | ExposureMask, handleEvents, sPtr);
+	WMCreateEventHandler(sPtr->viewport, SubstructureNotifyMask, handleViewportEvents, sPtr);
+
+	sPtr->lineScroll = 4;
+
+	sPtr->pageScroll = 0;
+
+	return sPtr;
+}
+
+static void applyScrollerValues(WMScrollView * sPtr)
+{
+	int x, y;
+
+	if (sPtr->contentView == NULL)
+		return;
+
+	if (sPtr->flags.hasHScroller) {
+		float v = WMGetScrollerValue(sPtr->hScroller);
+		int size;
+
+		size = sPtr->contentView->size.width - sPtr->viewport->size.width;
+
+		x = v * size;
+	} else {
+		x = 0;
+	}
+
+	if (sPtr->flags.hasVScroller) {
+		float v = WMGetScrollerValue(sPtr->vScroller);
+
+		int size;
+
+		size = sPtr->contentView->size.height - sPtr->viewport->size.height;
+
+		y = v * size;
+	} else {
+		y = 0;
+	}
+
+	x = WMAX(0, x);
+	y = WMAX(0, y);
+
+	W_MoveView(sPtr->contentView, -x, -y);
+
+	W_RaiseView(sPtr->viewport);
+}
+
+static void reorganizeInterior(WMScrollView * sPtr)
+{
+	int hx, hy, hw;
+	int vx, vy, vh;
+	int cx, cy, cw, ch;
+
+	cw = hw = sPtr->view->size.width;
+	vh = ch = sPtr->view->size.height;
+
+	if (sPtr->flags.relief == WRSimple) {
+		cw -= 2;
+		ch -= 2;
+		cx = 1;
+		cy = 1;
+	} else if (sPtr->flags.relief != WRFlat) {
+		cw -= 3;
+		ch -= 3;
+		cx = 2;
+		cy = 2;
+	} else {
+		cx = 0;
+		cy = 0;
+	}
+
+	if (sPtr->flags.hasHScroller) {
+		int h = 20;
+
+		ch -= h;
+
+		if (sPtr->flags.relief == WRSimple) {
+			hx = 0;
+			hy = sPtr->view->size.height - h;
+		} else if (sPtr->flags.relief != WRFlat) {
+			hx = 1;
+			hy = sPtr->view->size.height - h - 1;
+			hw -= 2;
+		} else {
+			hx = 0;
+			hy = sPtr->view->size.height - h;
+		}
+	} else {
+		/* make compiler shutup */
+		hx = 0;
+		hy = 0;
+	}
+
+	if (sPtr->flags.hasVScroller) {
+		int w = 20;
+		cw -= w;
+		cx += w;
+		hx += w - 1;
+		hw -= w - 1;
+
+		if (sPtr->flags.relief == WRSimple) {
+			vx = 0;
+			vy = 0;
+		} else if (sPtr->flags.relief != WRFlat) {
+			vx = 1;
+			vy = 1;
+			vh -= 2;
+		} else {
+			vx = 0;
+			vy = 0;
+		}
+	} else {
+		/* make compiler shutup */
+		vx = 0;
+		vy = 0;
+	}
+
+	W_ResizeView(sPtr->viewport, cw, ch);
+	W_MoveView(sPtr->viewport, cx, cy);
+
+	if (sPtr->flags.hasHScroller) {
+		WMResizeWidget(sPtr->hScroller, hw, 20);
+		WMMoveWidget(sPtr->hScroller, hx, hy);
+	}
+	if (sPtr->flags.hasVScroller) {
+		WMResizeWidget(sPtr->vScroller, 20, vh);
+		WMMoveWidget(sPtr->vScroller, vx, vy);
+	}
+
+	applyScrollerValues(sPtr);
+}
+
+static void resizeScrollView(W_ViewDelegate * self, WMView * view)
+{
+	reorganizeInterior(view->self);
+	updateScrollerProportion(view->self);
+}
+
+void WMResizeScrollViewContent(WMScrollView * sPtr, unsigned int width, unsigned int height)
+{
+	int w, h, x;
+
+	w = width;
+	h = height;
+
+	x = 0;
+	if (sPtr->flags.relief == WRSimple) {
+		w += 2;
+		h += 2;
+	} else if (sPtr->flags.relief != WRFlat) {
+		w += 4;
+		h += 4;
+		x = 1;
+	}
+
+	if (sPtr->flags.hasVScroller) {
+		WMResizeWidget(sPtr->vScroller, 20, h);
+		width -= W_VIEW(sPtr->vScroller)->size.width;
+	}
+
+	if (sPtr->flags.hasHScroller) {
+		WMResizeWidget(sPtr->hScroller, w, 20);
+		WMMoveWidget(sPtr->hScroller, x, h);
+		height -= W_VIEW(sPtr->hScroller)->size.height;
+	}
+
+	W_ResizeView(sPtr->view, w, h);
+
+	W_ResizeView(sPtr->viewport, width, height);
+}
+
+void WMSetScrollViewLineScroll(WMScrollView * sPtr, int amount)
+{
+	assert(amount > 0);
+
+	sPtr->lineScroll = amount;
+}
+
+void WMSetScrollViewPageScroll(WMScrollView * sPtr, int amount)
+{
+	assert(amount >= 0);
+
+	sPtr->pageScroll = amount;
+}
+
+WMRect WMGetScrollViewVisibleRect(WMScrollView * sPtr)
+{
+	WMRect rect;
+
+	rect.pos.x = -sPtr->contentView->pos.x;
+	rect.pos.y = -sPtr->contentView->pos.y;
+	rect.size = sPtr->viewport->size;
+
+	return rect;
+}
+
+void WMScrollViewScrollPoint(WMScrollView * sPtr, WMPoint point)
+{
+	float xsize, ysize;
+	float xpos, ypos;
+
+	xsize = sPtr->contentView->size.width - sPtr->viewport->size.width;
+	ysize = sPtr->contentView->size.height - sPtr->viewport->size.height;
+
+	xpos = point.x / xsize;
+	ypos = point.y / ysize;
+
+	if (sPtr->hScroller)
+		WMSetScrollerParameters(sPtr->hScroller, xpos, WMGetScrollerKnobProportion(sPtr->hScroller));
+	if (sPtr->vScroller)
+		WMSetScrollerParameters(sPtr->vScroller, ypos, WMGetScrollerKnobProportion(sPtr->vScroller));
+
+	W_MoveView(sPtr->contentView, -point.x, -point.y);
+}
+
+static void doScrolling(WMWidget * self, void *data)
+{
+	ScrollView *sPtr = (ScrollView *) data;
+	float value;
+	int pos;
+	int vpsize;
+	float size;
+
+	if (sPtr->hScroller == (WMScroller *) self) {
+		pos = -sPtr->contentView->pos.x;
+		size = sPtr->contentView->size.width - sPtr->viewport->size.width;
+		vpsize = sPtr->viewport->size.width - sPtr->pageScroll;
+	} else {
+		pos = -sPtr->contentView->pos.y;
+		size = sPtr->contentView->size.height - sPtr->viewport->size.height;
+		vpsize = sPtr->viewport->size.height - sPtr->pageScroll;
+	}
+	if (vpsize <= 0)
+		vpsize = 1;
+
+	switch (WMGetScrollerHitPart(self)) {
+	case WSDecrementLine:
+		if (pos > 0) {
+			pos -= sPtr->lineScroll;
+			if (pos < 0)
+				pos = 0;
+			value = (float)pos / size;
+			WMSetScrollerParameters(self, value, WMGetScrollerKnobProportion(self));
+		}
+		break;
+	case WSIncrementLine:
+		if (pos < size) {
+			pos += sPtr->lineScroll;
+			if (pos > size)
+				pos = size;
+			value = (float)pos / size;
+			WMSetScrollerParameters(self, value, WMGetScrollerKnobProportion(self));
+		}
+		break;
+
+	case WSKnob:
+		value = WMGetScrollerValue(self);
+		pos = value * size;
+		break;
+
+	case WSDecrementPage:
+		if (pos > 0) {
+			pos -= vpsize;
+			if (pos < 0)
+				pos = 0;
+			value = (float)pos / size;
+			WMSetScrollerParameters(self, value, WMGetScrollerKnobProportion(self));
+		}
+		break;
+
+	case WSDecrementWheel:
+		if (pos > 0) {
+			pos -= vpsize / 3;
+			if (pos < 0)
+				pos = 0;
+			value = (float)pos / size;
+			WMSetScrollerParameters(self, value, WMGetScrollerKnobProportion(self));
+		}
+		break;
+
+	case WSIncrementPage:
+		if (pos < size) {
+			pos += vpsize;
+			if (pos > size)
+				pos = size;
+			value = (float)pos / size;
+			WMSetScrollerParameters(self, value, WMGetScrollerKnobProportion(self));
+		}
+		break;
+
+	case WSIncrementWheel:
+		if (pos < size) {
+			pos += vpsize / 3;
+			if (pos > size)
+				pos = size;
+			value = (float)pos / size;
+			WMSetScrollerParameters(self, value, WMGetScrollerKnobProportion(self));
+		}
+		break;
+
+	case WSNoPart:
+	case WSKnobSlot:
+		break;
+	}
+
+	if (sPtr->hScroller == (WMScroller *) self) {
+		W_MoveView(sPtr->contentView, -pos, sPtr->contentView->pos.y);
+	} else {
+		W_MoveView(sPtr->contentView, sPtr->contentView->pos.x, -pos);
+	}
+}
+
+WMScroller *WMGetScrollViewHorizontalScroller(WMScrollView * sPtr)
+{
+	return sPtr->hScroller;
+}
+
+WMScroller *WMGetScrollViewVerticalScroller(WMScrollView * sPtr)
+{
+	return sPtr->vScroller;
+}
+
+void WMSetScrollViewHasHorizontalScroller(WMScrollView * sPtr, Bool flag)
+{
+	if (flag) {
+		if (sPtr->flags.hasHScroller)
+			return;
+		sPtr->flags.hasHScroller = 1;
+
+		sPtr->hScroller = WMCreateScroller(sPtr);
+		WMSetScrollerAction(sPtr->hScroller, doScrolling, sPtr);
+		/* make it a horiz. scroller */
+		WMResizeWidget(sPtr->hScroller, 2, 1);
+
+		if (W_VIEW_REALIZED(sPtr->view)) {
+			WMRealizeWidget(sPtr->hScroller);
+		}
+
+		reorganizeInterior(sPtr);
+
+		WMMapWidget(sPtr->hScroller);
+	} else {
+		if (!sPtr->flags.hasHScroller)
+			return;
+
+		WMUnmapWidget(sPtr->hScroller);
+		WMDestroyWidget(sPtr->hScroller);
+		sPtr->hScroller = NULL;
+		sPtr->flags.hasHScroller = 0;
+
+		reorganizeInterior(sPtr);
+	}
+}
+
+void WMSetScrollViewHasVerticalScroller(WMScrollView * sPtr, Bool flag)
+{
+	if (flag) {
+		if (sPtr->flags.hasVScroller)
+			return;
+		sPtr->flags.hasVScroller = 1;
+
+		sPtr->vScroller = WMCreateScroller(sPtr);
+		WMSetScrollerAction(sPtr->vScroller, doScrolling, sPtr);
+		WMSetScrollerArrowsPosition(sPtr->vScroller, WSAMaxEnd);
+		/* make it a vert. scroller */
+		WMResizeWidget(sPtr->vScroller, 1, 2);
+
+		if (W_VIEW_REALIZED(sPtr->view)) {
+			WMRealizeWidget(sPtr->vScroller);
+		}
+
+		reorganizeInterior(sPtr);
+
+		WMMapWidget(sPtr->vScroller);
+	} else {
+		if (!sPtr->flags.hasVScroller)
+			return;
+		sPtr->flags.hasVScroller = 0;
+
+		WMUnmapWidget(sPtr->vScroller);
+		WMDestroyWidget(sPtr->vScroller);
+		sPtr->vScroller = NULL;
+
+		reorganizeInterior(sPtr);
+	}
+}
+
+void WMSetScrollViewContentView(WMScrollView * sPtr, WMView * view)
+{
+	assert(sPtr->contentView == NULL);
+
+	sPtr->contentView = view;
+
+	W_ReparentView(sPtr->contentView, sPtr->viewport, 0, 0);
+
+	if (sPtr->flags.hasHScroller) {
+		float prop;
+
+		prop = (float)sPtr->viewport->size.width / sPtr->contentView->size.width;
+		WMSetScrollerParameters(sPtr->hScroller, 0, prop);
+	}
+	if (sPtr->flags.hasVScroller) {
+		float prop;
+
+		prop = (float)sPtr->viewport->size.height / sPtr->contentView->size.height;
+
+		WMSetScrollerParameters(sPtr->vScroller, 0, prop);
+	}
+}
+
+void WMSetScrollViewRelief(WMScrollView * sPtr, WMReliefType type)
+{
+	sPtr->flags.relief = type;
+
+	reorganizeInterior(sPtr);
+
+	if (sPtr->view->flags.mapped)
+		paintScrollView(sPtr);
+
+}
+
+static void paintScrollView(ScrollView * sPtr)
+{
+	W_DrawRelief(sPtr->view->screen, sPtr->view->window, 0, 0,
+		     sPtr->view->size.width, sPtr->view->size.height, sPtr->flags.relief);
+}
+
+static void updateScrollerProportion(ScrollView * sPtr)
+{
+	float prop, value;
+	float oldV, oldP;
+
+	if (sPtr->flags.hasHScroller) {
+		oldV = WMGetScrollerValue(sPtr->hScroller);
+		oldP = WMGetScrollerKnobProportion(sPtr->hScroller);
+
+		prop = (float)sPtr->viewport->size.width / (float)sPtr->contentView->size.width;
+
+		if (oldP == 1.0)
+			value = 0;
+		else
+			value = (prop * oldV) / oldP;
+		WMSetScrollerParameters(sPtr->hScroller, value, prop);
+	}
+	if (sPtr->flags.hasVScroller) {
+		oldV = WMGetScrollerValue(sPtr->vScroller);
+		oldP = WMGetScrollerKnobProportion(sPtr->vScroller);
+
+		prop = (float)sPtr->viewport->size.height / (float)sPtr->contentView->size.height;
+
+		if (oldP == 1.0)
+			value = 0;
+		else
+			value = (prop * oldV) / oldP;
+		WMSetScrollerParameters(sPtr->vScroller, value, prop);
+	}
+	applyScrollerValues(sPtr);
+}
+
+static void handleViewportEvents(XEvent * event, void *data)
+{
+	ScrollView *sPtr = (ScrollView *) data;
+
+	if (sPtr->contentView && event->xconfigure.window == sPtr->contentView->window)
+		updateScrollerProportion(sPtr);
+}
+
+static void handleEvents(XEvent * event, void *data)
+{
+	ScrollView *sPtr = (ScrollView *) data;
+
+	CHECK_CLASS(data, WC_ScrollView);
+
+	switch (event->type) {
+	case Expose:
+		if (event->xexpose.count != 0)
+			break;
+		if (event->xexpose.serial == 0)	/* means it's artificial */
+			W_RedisplayView(sPtr->contentView);
+		else
+			paintScrollView(sPtr);
+		break;
+
+	case DestroyNotify:
+		destroyScrollView(sPtr);
+		break;
+
+	}
+}
+
+static void destroyScrollView(ScrollView * sPtr)
+{
+	wfree(sPtr);
+}