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https://github.com/gryf/wmaker.git
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Initial revision
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scottc
402
WINGs/wsplitview.c
Normal file
402
WINGs/wsplitview.c
Normal file
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#include "WINGsP.h"
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typedef struct W_SplitView {
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W_Class widgetClass;
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W_View *view;
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/* WMSplitViewResizeSubviewsProc *resizeSubviewsProc;
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*/
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WMSplitViewConstrainProc *constrainProc;
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struct {
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unsigned int splitViewIsFull:1; /* already added 2 subviews */
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} flags;
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} SplitView;
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#define DIVIDER_THICKNESS 8
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static void destroySplitView(SplitView *sPtr);
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static void paintSplitView(SplitView *sPtr);
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static void handleEvents(XEvent *event, void *data);
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static void handleActionEvents(XEvent *event, void *data);
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W_ViewProcedureTable _SplitViewViewProcedures = {
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NULL,
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NULL,
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NULL
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};
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static int
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subviewCount(SplitView *sPtr)
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{
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int count = 0;
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WMView *view;
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for (view=sPtr->view->childrenList; view != NULL; view=view->nextSister)
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count++;
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return count;
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}
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static void
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handleViewResized(void *self, WMNotification *notification)
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{
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SplitView *sPtr = (SplitView*)self;
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int oldHeight;
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WMView *view = sPtr->view;
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int newWidth = view->size.width;
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WMView *upper, *lower;
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if (!view->childrenList)
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return;
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if (view->childrenList->nextSister==NULL) {
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if (view->self)
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WMResizeWidget(view->childrenList->self, newWidth, view->size.height);
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else
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W_ResizeView(view->childrenList, newWidth, view->size.height);
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} else {
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upper = view->childrenList;
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lower = upper->nextSister;
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oldHeight = upper->size.height+DIVIDER_THICKNESS+lower->size.height;
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if (oldHeight > view->size.height
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&& upper->size.height+DIVIDER_THICKNESS >= view->size.height) {
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WMAdjustSplitViewSubviews(sPtr);
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} else {
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if (upper->self) {
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WMResizeWidget(upper->self, newWidth, upper->size.height);
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} else {
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W_ResizeView(upper, newWidth, upper->size.height);
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}
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if (lower->self) {
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WMResizeWidget(lower->self, newWidth,
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view->size.height-lower->pos.y);
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} else {
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W_ResizeView(lower, newWidth, view->size.height-lower->pos.y);
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}
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}
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}
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}
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WMSplitView*
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WMCreateSplitView(WMWidget *parent)
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{
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SplitView *sPtr;
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sPtr = wmalloc(sizeof(SplitView));
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memset(sPtr, 0, sizeof(SplitView));
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sPtr->widgetClass = WC_SplitView;
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sPtr->view = W_CreateView(W_VIEW(parent));
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if (!sPtr->view) {
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free(sPtr);
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return NULL;
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}
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sPtr->view->self = sPtr;
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WMSetViewNotifySizeChanges(sPtr->view, True);
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WMCreateEventHandler(sPtr->view, ExposureMask|StructureNotifyMask
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|ClientMessageMask, handleEvents, sPtr);
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WMCreateEventHandler(sPtr->view, ButtonPressMask|ButtonReleaseMask
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|EnterWindowMask|LeaveWindowMask,
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handleActionEvents, sPtr);
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WMAddNotificationObserver(handleViewResized, sPtr,
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WMViewSizeDidChangeNotification, sPtr->view);
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return sPtr;
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}
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void
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WMAddSplitViewSubview(WMSplitView *sPtr, WMView *subview)
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{
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int wasMapped;
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assert(!sPtr->flags.splitViewIsFull);
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wasMapped = subview->flags.mapped;
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if (wasMapped) {
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W_UnmapView(subview);
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}
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W_ReparentView(subview, sPtr->view);
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#if 0
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if (sPtr->resizeSubviewsProc && subviewCount(sPtr)>1) {
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(*sPtr->resizeSubviewsProc)(sPtr, sPtr->view->size.width,
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sPtr->view->size.height);
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/* check if there is free space for the new subview and
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* put the subview in it */
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} else {
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}
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#endif
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WMAdjustSplitViewSubviews(sPtr);
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if (subviewCount(sPtr)==2)
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sPtr->flags.splitViewIsFull = 1;
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if (wasMapped) {
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W_MapView(subview);
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}
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}
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void
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WMSetSplitViewConstrainProc(WMSplitView *sPtr, WMSplitViewConstrainProc *proc)
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{
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sPtr->constrainProc = proc;
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}
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void
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WMAdjustSplitViewSubviews(WMSplitView *sPtr)
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{
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int theight = sPtr->view->size.height;
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int width = sPtr->view->size.width;
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int height;
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int y, count;
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W_View *view;
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count = subviewCount(sPtr);
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height = (theight - (count-1)*DIVIDER_THICKNESS)/count;
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view = sPtr->view->childrenList;
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if (view->self) {
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WMMoveWidget(view->self, 0, 0);
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WMResizeWidget(view->self, width, height);
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} else {
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W_MoveView(view, 0, 0);
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W_ResizeView(view, width, height);
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}
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y = height + DIVIDER_THICKNESS;
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for (view = view->nextSister; view != NULL; view = view->nextSister) {
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if (view->self) {
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WMMoveWidget(view->self, 0, y);
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WMResizeWidget(view->self, width, height);
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} else {
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W_MoveView(view, 0, y);
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W_ResizeView(view, width, height);
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}
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y += height + DIVIDER_THICKNESS;
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}
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}
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#if 0
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void
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WMSetSplitViewResizeSubviewsProc(WMSplitView *sPtr,
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WMSplitViewResizeSubviewsProc *proc)
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{
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sPtr->resizeSubviewsProc = proc;
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}
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#endif
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int
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WMGetSplitViewDividerThickness(WMSplitView *sPtr)
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{
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return DIVIDER_THICKNESS;
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}
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static void
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paintSplitView(SplitView *sPtr)
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{
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W_Screen *scr = sPtr->view->screen;
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int y, x;
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W_View *ptr;
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WMPixmap *dimple = scr->scrollerDimple;
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XClearWindow(scr->display, sPtr->view->window);
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x = (sPtr->view->size.width - dimple->width)/2;
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ptr = sPtr->view->childrenList;
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y = ptr->size.height;
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XSetClipMask(scr->display, scr->clipGC, dimple->mask);
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while (ptr->nextSister) {
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y += (DIVIDER_THICKNESS - dimple->width)/2;
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XSetClipOrigin(scr->display, scr->clipGC, x, y);
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XCopyArea(scr->display, dimple->pixmap, sPtr->view->window,
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scr->clipGC, 0, 0, dimple->width, dimple->height, x, y);
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y += ptr->size.height;
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ptr = ptr->nextSister;
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}
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}
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static void
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handleEvents(XEvent *event, void *data)
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{
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SplitView *sPtr = (SplitView*)data;
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CHECK_CLASS(data, WC_SplitView);
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switch (event->type) {
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case Expose:
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if (event->xexpose.count!=0)
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break;
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paintSplitView(sPtr);
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break;
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case DestroyNotify:
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destroySplitView(sPtr);
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break;
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}
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}
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static void
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dragDivider(SplitView *sPtr, int clickY)
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{
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int divider;
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WMView *view, *view1=NULL, *view2=NULL;
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int y;
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int ofsY;
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int done;
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int dragging;
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int minCoord;
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int maxCoord;
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XEvent ev;
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WMScreen *scr = sPtr->view->screen;
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view = sPtr->view->childrenList;
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divider = 0;
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ofsY = 0;
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y = 0;
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done = 0;
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while (view) {
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y += view->size.height+DIVIDER_THICKNESS;
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if (clickY < y) {
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/* offset from point where use clicked and the top of the
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* divider */
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ofsY = clickY - y + DIVIDER_THICKNESS;
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view1 = view;
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view2 = view->nextSister;
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/* can't be NULL. It would mean the divider is at the bottom */
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assert(view2!=NULL);
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done = 1;
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break;
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}
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view = view->nextSister;
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divider++;
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}
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assert(done);
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minCoord = view1->pos.y;
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maxCoord = view2->pos.y+view2->size.height-DIVIDER_THICKNESS;
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if (sPtr->constrainProc)
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(*sPtr->constrainProc)(sPtr, divider, &minCoord, &maxCoord);
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done = 0;
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dragging = 0;
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while (!done) {
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WMMaskEvent(scr->display, ButtonMotionMask|ButtonReleaseMask
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|ExposureMask, &ev);
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switch (ev.type) {
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case ButtonRelease:
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done = 1;
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if (dragging) {
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XFillRectangle(scr->display, sPtr->view->window, scr->ixorGC,
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0, y, sPtr->view->size.width,DIVIDER_THICKNESS);
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}
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break;
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case MotionNotify:
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if (dragging) {
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XFillRectangle(scr->display, sPtr->view->window, scr->ixorGC,
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0, y, sPtr->view->size.width,DIVIDER_THICKNESS);
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}
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if (ev.xmotion.y-ofsY < minCoord)
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y = minCoord;
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else if (ev.xmotion.y-ofsY > maxCoord)
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y = maxCoord;
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else
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y = ev.xmotion.y-ofsY;
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XFillRectangle(scr->display, sPtr->view->window, scr->ixorGC,
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0, y, sPtr->view->size.width, DIVIDER_THICKNESS);
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dragging = 1;
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break;
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default:
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WMHandleEvent(&ev);
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break;
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}
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}
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if (dragging) {
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int theight;
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theight = view1->size.height + view2->size.height + DIVIDER_THICKNESS;
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WMResizeWidget(view1->self, sPtr->view->size.width, y - view1->pos.y);
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WMResizeWidget(view2->self, sPtr->view->size.width,
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theight - view1->size.height - DIVIDER_THICKNESS);
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WMMoveWidget(view2->self, 0,
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view1->pos.y+view1->size.height+DIVIDER_THICKNESS);
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}
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}
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static void
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handleActionEvents(XEvent *event, void *data)
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{
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CHECK_CLASS(data, WC_SplitView);
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switch (event->type) {
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case ButtonPress:
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if (event->xbutton.button == Button1)
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dragDivider(data, event->xbutton.y);
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break;
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}
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}
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static void
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destroySplitView(SplitView *sPtr)
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{
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WMRemoveNotificationObserver(sPtr);
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free(sPtr);
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}
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