1080 lines
33 KiB
C
1080 lines
33 KiB
C
// widgetTreeView.c — TreeView and TreeItem widgets
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#include "widgetInternal.h"
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// ============================================================
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// Prototypes
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// ============================================================
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static int32_t calcTreeItemsHeight(WidgetT *parent, const BitmapFontT *font);
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static int32_t calcTreeItemsMaxWidth(WidgetT *parent, const BitmapFontT *font, int32_t depth);
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static void drawTreeHScrollbar(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const ColorSchemeT *colors, int32_t totalW, int32_t innerW, bool hasVSb);
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static void drawTreeVScrollbar(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const ColorSchemeT *colors, int32_t totalH, int32_t innerH);
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static WidgetT *firstVisibleItem(WidgetT *treeView);
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static void layoutTreeItems(WidgetT *parent, const BitmapFontT *font, int32_t x, int32_t *y, int32_t width, int32_t depth);
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static WidgetT *nextVisibleItem(WidgetT *item, WidgetT *treeView);
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static void paintTreeItems(WidgetT *parent, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors, int32_t baseX, int32_t *itemY, int32_t depth, int32_t clipTop, int32_t clipBottom, WidgetT *selectedItem);
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static WidgetT *prevVisibleItem(WidgetT *item, WidgetT *treeView);
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static void treeCalcScrollbarNeeds(WidgetT *w, const BitmapFontT *font, int32_t *outTotalH, int32_t *outTotalW, int32_t *outInnerH, int32_t *outInnerW, bool *outNeedVSb, bool *outNeedHSb);
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static WidgetT *treeItemAtY(WidgetT *parent, int32_t targetY, int32_t *curY, const BitmapFontT *font);
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static int32_t treeItemYPos(WidgetT *treeView, WidgetT *target, const BitmapFontT *font);
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static int32_t treeItemYPosHelper(WidgetT *parent, WidgetT *target, int32_t *curY, const BitmapFontT *font);
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// ============================================================
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// calcTreeItemsHeight
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// ============================================================
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static int32_t calcTreeItemsHeight(WidgetT *parent, const BitmapFontT *font) {
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int32_t totalH = 0;
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for (WidgetT *c = parent->firstChild; c; c = c->nextSibling) {
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if (c->type != WidgetTreeItemE || !c->visible) {
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continue;
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}
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totalH += font->charHeight;
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if (c->as.treeItem.expanded && c->firstChild) {
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totalH += calcTreeItemsHeight(c, font);
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}
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}
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return totalH;
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}
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// ============================================================
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// calcTreeItemsMaxWidth
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// ============================================================
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static int32_t calcTreeItemsMaxWidth(WidgetT *parent, const BitmapFontT *font, int32_t depth) {
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int32_t maxW = 0;
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for (WidgetT *c = parent->firstChild; c; c = c->nextSibling) {
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if (c->type != WidgetTreeItemE || !c->visible) {
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continue;
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}
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int32_t indent = depth * TREE_INDENT + TREE_EXPAND_SIZE + TREE_ICON_GAP;
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int32_t textW = (int32_t)strlen(c->as.treeItem.text) * font->charWidth;
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int32_t itemW = indent + textW;
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if (itemW > maxW) {
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maxW = itemW;
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}
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if (c->as.treeItem.expanded && c->firstChild) {
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int32_t childW = calcTreeItemsMaxWidth(c, font, depth + 1);
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if (childW > maxW) {
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maxW = childW;
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}
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}
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}
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return maxW;
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}
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// ============================================================
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// drawTreeHScrollbar
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// ============================================================
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static void drawTreeHScrollbar(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const ColorSchemeT *colors, int32_t totalW, int32_t innerW, bool hasVSb) {
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int32_t sbX = w->x + TREE_BORDER;
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int32_t sbY = w->y + w->h - TREE_BORDER - TREE_SB_W;
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int32_t sbW = innerW;
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if (sbW < TREE_SB_W * 3) {
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return;
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}
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// Trough background
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BevelStyleT troughBevel = BEVEL_TROUGH(colors);
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drawBevel(d, ops, sbX, sbY, sbW, TREE_SB_W, &troughBevel);
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// Left arrow button
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BevelStyleT btnBevel = BEVEL_RAISED(colors, 1);
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drawBevel(d, ops, sbX, sbY, TREE_SB_W, TREE_SB_W, &btnBevel);
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// Left arrow triangle
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{
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int32_t cx = sbX + TREE_SB_W / 2;
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int32_t cy = sbY + TREE_SB_W / 2;
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uint32_t fg = colors->contentFg;
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for (int32_t i = 0; i < 4; i++) {
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drawVLine(d, ops, cx - 2 + i, cy - i, 1 + i * 2, fg);
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}
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}
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// Right arrow button
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int32_t rightX = sbX + sbW - TREE_SB_W;
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drawBevel(d, ops, rightX, sbY, TREE_SB_W, TREE_SB_W, &btnBevel);
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// Right arrow triangle
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{
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int32_t cx = rightX + TREE_SB_W / 2;
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int32_t cy = sbY + TREE_SB_W / 2;
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uint32_t fg = colors->contentFg;
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for (int32_t i = 0; i < 4; i++) {
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drawVLine(d, ops, cx + 2 - i, cy - i, 1 + i * 2, fg);
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}
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}
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// Thumb
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int32_t trackLen = sbW - TREE_SB_W * 2;
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if (trackLen > 0 && totalW > 0) {
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int32_t thumbPos;
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int32_t thumbSize;
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widgetScrollbarThumb(trackLen, totalW, innerW, w->as.treeView.scrollPosH, &thumbPos, &thumbSize);
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drawBevel(d, ops, sbX + TREE_SB_W + thumbPos, sbY, thumbSize, TREE_SB_W, &btnBevel);
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}
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// Fill dead corner when both scrollbars present
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if (hasVSb) {
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rectFill(d, ops, sbX + sbW, sbY, TREE_SB_W, TREE_SB_W, colors->windowFace);
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}
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}
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// ============================================================
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// drawTreeVScrollbar
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// ============================================================
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static void drawTreeVScrollbar(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const ColorSchemeT *colors, int32_t totalH, int32_t innerH) {
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int32_t sbX = w->x + w->w - TREE_BORDER - TREE_SB_W;
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int32_t sbY = w->y + TREE_BORDER;
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int32_t sbH = innerH;
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if (sbH < TREE_SB_W * 3) {
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return;
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}
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// Trough background
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BevelStyleT troughBevel = BEVEL_TROUGH(colors);
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drawBevel(d, ops, sbX, sbY, TREE_SB_W, sbH, &troughBevel);
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// Up arrow button
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BevelStyleT btnBevel = BEVEL_RAISED(colors, 1);
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drawBevel(d, ops, sbX, sbY, TREE_SB_W, TREE_SB_W, &btnBevel);
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// Up arrow triangle
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{
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int32_t cx = sbX + TREE_SB_W / 2;
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int32_t cy = sbY + TREE_SB_W / 2;
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uint32_t fg = colors->contentFg;
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for (int32_t i = 0; i < 4; i++) {
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drawHLine(d, ops, cx - i, cy - 2 + i, 1 + i * 2, fg);
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}
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}
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// Down arrow button
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int32_t downY = sbY + sbH - TREE_SB_W;
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drawBevel(d, ops, sbX, downY, TREE_SB_W, TREE_SB_W, &btnBevel);
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// Down arrow triangle
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{
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int32_t cx = sbX + TREE_SB_W / 2;
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int32_t cy = downY + TREE_SB_W / 2;
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uint32_t fg = colors->contentFg;
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for (int32_t i = 0; i < 4; i++) {
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drawHLine(d, ops, cx - i, cy + 2 - i, 1 + i * 2, fg);
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}
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}
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// Thumb
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int32_t trackLen = sbH - TREE_SB_W * 2;
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if (trackLen > 0 && totalH > 0) {
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int32_t thumbPos;
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int32_t thumbSize;
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widgetScrollbarThumb(trackLen, totalH, innerH, w->as.treeView.scrollPos, &thumbPos, &thumbSize);
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drawBevel(d, ops, sbX, sbY + TREE_SB_W + thumbPos, TREE_SB_W, thumbSize, &btnBevel);
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}
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}
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// ============================================================
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// firstVisibleItem
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// ============================================================
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//
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// Return the first visible tree item (depth-first).
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static WidgetT *firstVisibleItem(WidgetT *treeView) {
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for (WidgetT *c = treeView->firstChild; c; c = c->nextSibling) {
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if (c->type == WidgetTreeItemE && c->visible) {
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return c;
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}
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}
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return NULL;
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}
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// ============================================================
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// layoutTreeItems
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// ============================================================
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static void layoutTreeItems(WidgetT *parent, const BitmapFontT *font, int32_t x, int32_t *y, int32_t width, int32_t depth) {
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for (WidgetT *c = parent->firstChild; c; c = c->nextSibling) {
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if (c->type != WidgetTreeItemE || !c->visible) {
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continue;
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}
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c->x = x;
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c->y = *y;
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c->w = width;
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c->h = font->charHeight;
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*y += font->charHeight;
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if (c->as.treeItem.expanded && c->firstChild) {
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layoutTreeItems(c, font, x, y, width, depth + 1);
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}
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}
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}
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// ============================================================
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// nextVisibleItem
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// ============================================================
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//
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// Return the next visible tree item after the given item
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// (depth-first order: children first, then siblings, then uncle).
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static WidgetT *nextVisibleItem(WidgetT *item, WidgetT *treeView) {
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// If expanded with children, descend
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if (item->as.treeItem.expanded) {
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for (WidgetT *c = item->firstChild; c; c = c->nextSibling) {
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if (c->type == WidgetTreeItemE && c->visible) {
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return c;
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}
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}
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}
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// Try next sibling
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for (WidgetT *s = item->nextSibling; s; s = s->nextSibling) {
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if (s->type == WidgetTreeItemE && s->visible) {
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return s;
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}
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}
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// Walk up parents, looking for their next sibling
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for (WidgetT *p = item->parent; p && p != treeView; p = p->parent) {
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for (WidgetT *s = p->nextSibling; s; s = s->nextSibling) {
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if (s->type == WidgetTreeItemE && s->visible) {
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return s;
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}
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}
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}
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return NULL;
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}
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// ============================================================
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// paintTreeItems
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// ============================================================
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static void paintTreeItems(WidgetT *parent, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors, int32_t baseX, int32_t *itemY, int32_t depth, int32_t clipTop, int32_t clipBottom, WidgetT *selectedItem) {
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for (WidgetT *c = parent->firstChild; c; c = c->nextSibling) {
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if (c->type != WidgetTreeItemE || !c->visible) {
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continue;
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}
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int32_t ix = baseX + depth * TREE_INDENT;
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int32_t iy = *itemY;
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*itemY += font->charHeight;
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// Skip items outside visible area
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if (iy + font->charHeight <= clipTop || iy >= clipBottom) {
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if (c->as.treeItem.expanded && c->firstChild) {
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paintTreeItems(c, d, ops, font, colors, baseX, itemY, depth + 1, clipTop, clipBottom, selectedItem);
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}
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continue;
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}
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// Highlight selected item
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bool isSelected = (c == selectedItem);
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uint32_t fg;
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uint32_t bg;
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if (isSelected) {
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fg = colors->menuHighlightFg;
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bg = colors->menuHighlightBg;
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rectFill(d, ops, baseX, iy, d->clipW, font->charHeight, bg);
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} else {
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fg = c->fgColor ? c->fgColor : colors->contentFg;
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bg = c->bgColor ? c->bgColor : colors->contentBg;
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}
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// Draw expand/collapse icon if item has children
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bool hasChildren = false;
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for (WidgetT *gc = c->firstChild; gc; gc = gc->nextSibling) {
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if (gc->type == WidgetTreeItemE) {
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hasChildren = true;
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break;
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}
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}
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int32_t textX = ix;
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if (hasChildren) {
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int32_t iconX = ix;
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int32_t iconY = iy + (font->charHeight - TREE_EXPAND_SIZE) / 2;
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// Draw box
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rectFill(d, ops, iconX + 1, iconY + 1, TREE_EXPAND_SIZE - 2, TREE_EXPAND_SIZE - 2, colors->contentBg);
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drawHLine(d, ops, iconX, iconY, TREE_EXPAND_SIZE, colors->windowShadow);
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drawHLine(d, ops, iconX, iconY + TREE_EXPAND_SIZE - 1, TREE_EXPAND_SIZE, colors->windowShadow);
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drawVLine(d, ops, iconX, iconY, TREE_EXPAND_SIZE, colors->windowShadow);
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drawVLine(d, ops, iconX + TREE_EXPAND_SIZE - 1, iconY, TREE_EXPAND_SIZE, colors->windowShadow);
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// Draw + or -
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int32_t mid = TREE_EXPAND_SIZE / 2;
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drawHLine(d, ops, iconX + 2, iconY + mid, TREE_EXPAND_SIZE - 4, colors->contentFg);
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if (!c->as.treeItem.expanded) {
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drawVLine(d, ops, iconX + mid, iconY + 2, TREE_EXPAND_SIZE - 4, colors->contentFg);
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}
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textX += TREE_EXPAND_SIZE + TREE_ICON_GAP;
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} else {
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textX += TREE_EXPAND_SIZE + TREE_ICON_GAP;
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}
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// Draw text
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drawText(d, ops, font, textX, iy, c->as.treeItem.text, fg, bg, isSelected);
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// Recurse into expanded children
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if (c->as.treeItem.expanded && c->firstChild) {
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paintTreeItems(c, d, ops, font, colors, baseX, itemY, depth + 1, clipTop, clipBottom, selectedItem);
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}
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}
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}
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// ============================================================
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// prevVisibleItem
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// ============================================================
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//
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// Return the previous visible tree item before the given item
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// (depth-first order: last visible descendant of previous sibling,
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// or parent).
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static WidgetT *prevVisibleItem(WidgetT *item, WidgetT *treeView) {
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// Find previous sibling
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WidgetT *prevSib = NULL;
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for (WidgetT *s = item->parent->firstChild; s && s != item; s = s->nextSibling) {
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if (s->type == WidgetTreeItemE && s->visible) {
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prevSib = s;
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}
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}
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if (prevSib) {
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// Descend to last visible descendant of previous sibling
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WidgetT *node = prevSib;
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while (node->as.treeItem.expanded) {
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WidgetT *last = NULL;
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for (WidgetT *c = node->firstChild; c; c = c->nextSibling) {
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if (c->type == WidgetTreeItemE && c->visible) {
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last = c;
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}
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}
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if (!last) {
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break;
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}
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node = last;
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}
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return node;
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}
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// No previous sibling — go to parent (if it's a tree item)
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if (item->parent && item->parent != treeView && item->parent->type == WidgetTreeItemE) {
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return item->parent;
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}
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return NULL;
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}
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// ============================================================
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// treeCalcScrollbarNeeds
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// ============================================================
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//
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// Compute content dimensions and determine which scrollbars are
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// needed, accounting for the mutual space dependency between them.
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static void treeCalcScrollbarNeeds(WidgetT *w, const BitmapFontT *font, int32_t *outTotalH, int32_t *outTotalW, int32_t *outInnerH, int32_t *outInnerW, bool *outNeedVSb, bool *outNeedHSb) {
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int32_t totalH = calcTreeItemsHeight(w, font);
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int32_t totalW = calcTreeItemsMaxWidth(w, font, 0);
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int32_t innerH = w->h - TREE_BORDER * 2;
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int32_t innerW = w->w - TREE_BORDER * 2;
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bool needVSb = (totalH > innerH);
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bool needHSb = (totalW > innerW);
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// V scrollbar reduces available width — may trigger H scrollbar
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if (needVSb) {
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innerW -= TREE_SB_W;
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if (!needHSb && totalW > innerW) {
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needHSb = true;
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}
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}
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// H scrollbar reduces available height — may trigger V scrollbar
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if (needHSb) {
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innerH -= TREE_SB_W;
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if (!needVSb && totalH > innerH) {
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needVSb = true;
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innerW -= TREE_SB_W;
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}
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}
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*outTotalH = totalH;
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*outTotalW = totalW;
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*outInnerH = innerH;
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*outInnerW = innerW;
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*outNeedVSb = needVSb;
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*outNeedHSb = needHSb;
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}
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// ============================================================
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// treeItemAtY
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// ============================================================
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//
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// Find the tree item at a given Y coordinate.
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static WidgetT *treeItemAtY(WidgetT *parent, int32_t targetY, int32_t *curY, const BitmapFontT *font) {
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for (WidgetT *c = parent->firstChild; c; c = c->nextSibling) {
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if (c->type != WidgetTreeItemE || !c->visible) {
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continue;
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}
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if (targetY >= *curY && targetY < *curY + font->charHeight) {
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return c;
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}
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*curY += font->charHeight;
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if (c->as.treeItem.expanded && c->firstChild) {
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WidgetT *found = treeItemAtY(c, targetY, curY, font);
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if (found) {
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return found;
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}
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}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
// ============================================================
|
|
// treeItemYPos
|
|
// ============================================================
|
|
//
|
|
// Return the Y offset (from tree top, 0-based) of a given item,
|
|
// or -1 if not found/visible.
|
|
|
|
static int32_t treeItemYPos(WidgetT *treeView, WidgetT *target, const BitmapFontT *font) {
|
|
int32_t curY = 0;
|
|
|
|
if (treeItemYPosHelper(treeView, target, &curY, font)) {
|
|
return curY;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
// ============================================================
|
|
// treeItemYPosHelper
|
|
// ============================================================
|
|
|
|
static int32_t treeItemYPosHelper(WidgetT *parent, WidgetT *target, int32_t *curY, const BitmapFontT *font) {
|
|
for (WidgetT *c = parent->firstChild; c; c = c->nextSibling) {
|
|
if (c->type != WidgetTreeItemE || !c->visible) {
|
|
continue;
|
|
}
|
|
|
|
if (c == target) {
|
|
return 1;
|
|
}
|
|
|
|
*curY += font->charHeight;
|
|
|
|
if (c->as.treeItem.expanded && c->firstChild) {
|
|
if (treeItemYPosHelper(c, target, curY, font)) {
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
// ============================================================
|
|
// wgtTreeItem
|
|
// ============================================================
|
|
|
|
WidgetT *wgtTreeItem(WidgetT *parent, const char *text) {
|
|
WidgetT *w = widgetAlloc(parent, WidgetTreeItemE);
|
|
|
|
if (w) {
|
|
w->as.treeItem.text = text;
|
|
w->as.treeItem.expanded = false;
|
|
}
|
|
|
|
return w;
|
|
}
|
|
|
|
|
|
// ============================================================
|
|
// widgetTreeItemGetText
|
|
// ============================================================
|
|
|
|
const char *widgetTreeItemGetText(const WidgetT *w) {
|
|
return w->as.treeItem.text ? w->as.treeItem.text : "";
|
|
}
|
|
|
|
|
|
// ============================================================
|
|
// widgetTreeItemSetText
|
|
// ============================================================
|
|
|
|
void widgetTreeItemSetText(WidgetT *w, const char *text) {
|
|
w->as.treeItem.text = text;
|
|
}
|
|
|
|
|
|
// ============================================================
|
|
// wgtTreeItemIsExpanded
|
|
// ============================================================
|
|
|
|
bool wgtTreeItemIsExpanded(const WidgetT *w) {
|
|
if (!w || w->type != WidgetTreeItemE) {
|
|
return false;
|
|
}
|
|
|
|
return w->as.treeItem.expanded;
|
|
}
|
|
|
|
|
|
// ============================================================
|
|
// wgtTreeItemSetExpanded
|
|
// ============================================================
|
|
|
|
void wgtTreeItemSetExpanded(WidgetT *w, bool expanded) {
|
|
if (!w || w->type != WidgetTreeItemE) {
|
|
return;
|
|
}
|
|
|
|
w->as.treeItem.expanded = expanded;
|
|
}
|
|
|
|
|
|
// ============================================================
|
|
// wgtTreeView
|
|
// ============================================================
|
|
|
|
WidgetT *wgtTreeView(WidgetT *parent) {
|
|
WidgetT *w = widgetAlloc(parent, WidgetTreeViewE);
|
|
|
|
if (w) {
|
|
w->weight = 100;
|
|
}
|
|
|
|
return w;
|
|
}
|
|
|
|
|
|
// ============================================================
|
|
// wgtTreeViewGetSelected
|
|
// ============================================================
|
|
|
|
WidgetT *wgtTreeViewGetSelected(const WidgetT *w) {
|
|
if (!w || w->type != WidgetTreeViewE) {
|
|
return NULL;
|
|
}
|
|
|
|
return w->as.treeView.selectedItem;
|
|
}
|
|
|
|
|
|
// ============================================================
|
|
// wgtTreeViewSetSelected
|
|
// ============================================================
|
|
|
|
void wgtTreeViewSetSelected(WidgetT *w, WidgetT *item) {
|
|
if (!w || w->type != WidgetTreeViewE) {
|
|
return;
|
|
}
|
|
|
|
w->as.treeView.selectedItem = item;
|
|
}
|
|
|
|
|
|
// ============================================================
|
|
// widgetTreeViewCalcMinSize
|
|
// ============================================================
|
|
|
|
void widgetTreeViewCalcMinSize(WidgetT *w, const BitmapFontT *font) {
|
|
int32_t minContentW = TREE_INDENT + TREE_EXPAND_SIZE + TREE_ICON_GAP + 6 * font->charWidth;
|
|
|
|
w->calcMinW = minContentW + TREE_BORDER * 2 + TREE_SB_W;
|
|
w->calcMinH = TREE_MIN_ROWS * font->charHeight + TREE_BORDER * 2;
|
|
}
|
|
|
|
|
|
// ============================================================
|
|
// widgetTreeViewOnKey
|
|
// ============================================================
|
|
|
|
void widgetTreeViewOnKey(WidgetT *w, int32_t key) {
|
|
if (!w || w->type != WidgetTreeViewE) {
|
|
return;
|
|
}
|
|
|
|
WidgetT *sel = w->as.treeView.selectedItem;
|
|
|
|
if (key == (0x50 | 0x100)) {
|
|
// Down arrow — next visible item
|
|
if (!sel) {
|
|
w->as.treeView.selectedItem = firstVisibleItem(w);
|
|
} else {
|
|
WidgetT *next = nextVisibleItem(sel, w);
|
|
|
|
if (next) {
|
|
w->as.treeView.selectedItem = next;
|
|
}
|
|
}
|
|
} else if (key == (0x48 | 0x100)) {
|
|
// Up arrow — previous visible item
|
|
if (!sel) {
|
|
w->as.treeView.selectedItem = firstVisibleItem(w);
|
|
} else {
|
|
WidgetT *prev = prevVisibleItem(sel, w);
|
|
|
|
if (prev) {
|
|
w->as.treeView.selectedItem = prev;
|
|
}
|
|
}
|
|
} else if (key == (0x4D | 0x100)) {
|
|
// Right arrow — expand if collapsed, else move to first child
|
|
if (sel) {
|
|
bool hasChildren = false;
|
|
|
|
for (WidgetT *c = sel->firstChild; c; c = c->nextSibling) {
|
|
if (c->type == WidgetTreeItemE) {
|
|
hasChildren = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (hasChildren) {
|
|
if (!sel->as.treeItem.expanded) {
|
|
sel->as.treeItem.expanded = true;
|
|
|
|
if (sel->onChange) {
|
|
sel->onChange(sel);
|
|
}
|
|
} else {
|
|
WidgetT *next = nextVisibleItem(sel, w);
|
|
|
|
if (next) {
|
|
w->as.treeView.selectedItem = next;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else if (key == (0x4B | 0x100)) {
|
|
// Left arrow — collapse if expanded, else move to parent
|
|
if (sel) {
|
|
if (sel->as.treeItem.expanded) {
|
|
sel->as.treeItem.expanded = false;
|
|
|
|
if (sel->onChange) {
|
|
sel->onChange(sel);
|
|
}
|
|
} else if (sel->parent && sel->parent != w && sel->parent->type == WidgetTreeItemE) {
|
|
w->as.treeView.selectedItem = sel->parent;
|
|
}
|
|
}
|
|
} else if (key == 0x0D) {
|
|
// Enter — toggle expand/collapse for parents, onClick for leaves
|
|
if (sel) {
|
|
bool hasChildren = false;
|
|
|
|
for (WidgetT *c = sel->firstChild; c; c = c->nextSibling) {
|
|
if (c->type == WidgetTreeItemE) {
|
|
hasChildren = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (hasChildren) {
|
|
sel->as.treeItem.expanded = !sel->as.treeItem.expanded;
|
|
|
|
if (sel->onChange) {
|
|
sel->onChange(sel);
|
|
}
|
|
} else {
|
|
if (sel->onClick) {
|
|
sel->onClick(sel);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
return;
|
|
}
|
|
|
|
// Scroll to keep selected item visible
|
|
sel = w->as.treeView.selectedItem;
|
|
|
|
if (sel) {
|
|
AppContextT *ctx = (AppContextT *)w->window->widgetRoot->userData;
|
|
const BitmapFontT *font = &ctx->font;
|
|
int32_t itemY = treeItemYPos(w, sel, font);
|
|
|
|
if (itemY >= 0) {
|
|
int32_t totalH;
|
|
int32_t totalW;
|
|
int32_t innerH;
|
|
int32_t innerW;
|
|
bool needVSb;
|
|
bool needHSb;
|
|
|
|
treeCalcScrollbarNeeds(w, font, &totalH, &totalW, &innerH, &innerW, &needVSb, &needHSb);
|
|
|
|
if (itemY < w->as.treeView.scrollPos) {
|
|
w->as.treeView.scrollPos = itemY;
|
|
} else if (itemY + font->charHeight > w->as.treeView.scrollPos + innerH) {
|
|
w->as.treeView.scrollPos = itemY + font->charHeight - innerH;
|
|
}
|
|
}
|
|
}
|
|
|
|
wgtInvalidate(w);
|
|
}
|
|
|
|
|
|
// ============================================================
|
|
// widgetTreeViewLayout
|
|
// ============================================================
|
|
|
|
void widgetTreeViewLayout(WidgetT *w, const BitmapFontT *font) {
|
|
// Auto-select first item if nothing is selected
|
|
if (!w->as.treeView.selectedItem) {
|
|
w->as.treeView.selectedItem = firstVisibleItem(w);
|
|
}
|
|
|
|
int32_t totalH;
|
|
int32_t totalW;
|
|
int32_t innerH;
|
|
int32_t innerW;
|
|
bool needVSb;
|
|
bool needHSb;
|
|
|
|
treeCalcScrollbarNeeds(w, font, &totalH, &totalW, &innerH, &innerW, &needVSb, &needHSb);
|
|
|
|
int32_t itemW = innerW > totalW ? innerW : totalW;
|
|
int32_t innerX = w->x + TREE_BORDER;
|
|
int32_t innerY = w->y + TREE_BORDER;
|
|
|
|
layoutTreeItems(w, font, innerX, &innerY, itemW, 0);
|
|
}
|
|
|
|
|
|
// ============================================================
|
|
// widgetTreeViewOnMouse
|
|
// ============================================================
|
|
|
|
void widgetTreeViewOnMouse(WidgetT *hit, WidgetT *root, int32_t vx, int32_t vy) {
|
|
hit->focused = true;
|
|
AppContextT *ctx = (AppContextT *)root->userData;
|
|
const BitmapFontT *font = &ctx->font;
|
|
|
|
int32_t totalH;
|
|
int32_t totalW;
|
|
int32_t innerH;
|
|
int32_t innerW;
|
|
bool needVSb;
|
|
bool needHSb;
|
|
|
|
treeCalcScrollbarNeeds(hit, font, &totalH, &totalW, &innerH, &innerW, &needVSb, &needHSb);
|
|
|
|
// Clamp scroll positions
|
|
int32_t maxScrollV = totalH - innerH;
|
|
int32_t maxScrollH = totalW - innerW;
|
|
|
|
if (maxScrollV < 0) {
|
|
maxScrollV = 0;
|
|
}
|
|
|
|
if (maxScrollH < 0) {
|
|
maxScrollH = 0;
|
|
}
|
|
|
|
hit->as.treeView.scrollPos = clampInt(hit->as.treeView.scrollPos, 0, maxScrollV);
|
|
hit->as.treeView.scrollPosH = clampInt(hit->as.treeView.scrollPosH, 0, maxScrollH);
|
|
|
|
// Check if click is on the vertical scrollbar
|
|
if (needVSb) {
|
|
int32_t sbX = hit->x + hit->w - TREE_BORDER - TREE_SB_W;
|
|
|
|
if (vx >= sbX && vy < hit->y + TREE_BORDER + innerH) {
|
|
int32_t sbY = hit->y + TREE_BORDER;
|
|
int32_t sbH = innerH;
|
|
int32_t relY = vy - sbY;
|
|
int32_t trackLen = sbH - TREE_SB_W * 2;
|
|
int32_t pageSize = innerH - font->charHeight;
|
|
|
|
if (pageSize < font->charHeight) {
|
|
pageSize = font->charHeight;
|
|
}
|
|
|
|
if (relY < TREE_SB_W) {
|
|
// Up arrow — scroll up one row
|
|
hit->as.treeView.scrollPos -= font->charHeight;
|
|
} else if (relY >= sbH - TREE_SB_W) {
|
|
// Down arrow — scroll down one row
|
|
hit->as.treeView.scrollPos += font->charHeight;
|
|
} else if (trackLen > 0) {
|
|
// Track area — page up/down based on thumb position
|
|
int32_t thumbPos;
|
|
int32_t thumbSize;
|
|
widgetScrollbarThumb(trackLen, totalH, innerH, hit->as.treeView.scrollPos, &thumbPos, &thumbSize);
|
|
|
|
int32_t trackRelY = relY - TREE_SB_W;
|
|
|
|
if (trackRelY < thumbPos) {
|
|
hit->as.treeView.scrollPos -= pageSize;
|
|
} else if (trackRelY >= thumbPos + thumbSize) {
|
|
hit->as.treeView.scrollPos += pageSize;
|
|
}
|
|
}
|
|
|
|
// Clamp after scroll
|
|
hit->as.treeView.scrollPos = clampInt(hit->as.treeView.scrollPos, 0, maxScrollV);
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Check if click is on the horizontal scrollbar
|
|
if (needHSb) {
|
|
int32_t sbY = hit->y + hit->h - TREE_BORDER - TREE_SB_W;
|
|
|
|
if (vy >= sbY && vx < hit->x + TREE_BORDER + innerW) {
|
|
int32_t sbX = hit->x + TREE_BORDER;
|
|
int32_t sbW = innerW;
|
|
int32_t relX = vx - sbX;
|
|
int32_t trackLen = sbW - TREE_SB_W * 2;
|
|
int32_t pageSize = innerW - font->charWidth;
|
|
|
|
if (pageSize < font->charWidth) {
|
|
pageSize = font->charWidth;
|
|
}
|
|
|
|
if (relX < TREE_SB_W) {
|
|
// Left arrow — scroll left
|
|
hit->as.treeView.scrollPosH -= font->charWidth;
|
|
} else if (relX >= sbW - TREE_SB_W) {
|
|
// Right arrow — scroll right
|
|
hit->as.treeView.scrollPosH += font->charWidth;
|
|
} else if (trackLen > 0) {
|
|
// Track area — page left/right based on thumb position
|
|
int32_t thumbPos;
|
|
int32_t thumbSize;
|
|
widgetScrollbarThumb(trackLen, totalW, innerW, hit->as.treeView.scrollPosH, &thumbPos, &thumbSize);
|
|
|
|
int32_t trackRelX = relX - TREE_SB_W;
|
|
|
|
if (trackRelX < thumbPos) {
|
|
hit->as.treeView.scrollPosH -= pageSize;
|
|
} else if (trackRelX >= thumbPos + thumbSize) {
|
|
hit->as.treeView.scrollPosH += pageSize;
|
|
}
|
|
}
|
|
|
|
// Clamp after scroll
|
|
hit->as.treeView.scrollPosH = clampInt(hit->as.treeView.scrollPosH, 0, maxScrollH);
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Click in dead corner (both scrollbars present) — ignore
|
|
if (needVSb && needHSb) {
|
|
int32_t cornerX = hit->x + hit->w - TREE_BORDER - TREE_SB_W;
|
|
int32_t cornerY = hit->y + hit->h - TREE_BORDER - TREE_SB_W;
|
|
|
|
if (vx >= cornerX && vy >= cornerY) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Tree item click — adjust for scroll offsets
|
|
int32_t curY = hit->y + TREE_BORDER - hit->as.treeView.scrollPos;
|
|
|
|
WidgetT *item = treeItemAtY(hit, vy, &curY, font);
|
|
|
|
if (!item) {
|
|
return;
|
|
}
|
|
|
|
// Set selection
|
|
hit->as.treeView.selectedItem = item;
|
|
|
|
// Check if click is on expand/collapse icon
|
|
bool hasChildren = false;
|
|
|
|
for (WidgetT *gc = item->firstChild; gc; gc = gc->nextSibling) {
|
|
if (gc->type == WidgetTreeItemE) {
|
|
hasChildren = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (hasChildren) {
|
|
// Calculate indent depth
|
|
int32_t depth = 0;
|
|
WidgetT *p = item->parent;
|
|
|
|
while (p && p->type == WidgetTreeItemE) {
|
|
depth++;
|
|
p = p->parent;
|
|
}
|
|
|
|
int32_t iconX = hit->x + TREE_BORDER + depth * TREE_INDENT - hit->as.treeView.scrollPosH;
|
|
|
|
if (vx >= iconX && vx < iconX + TREE_EXPAND_SIZE) {
|
|
item->as.treeItem.expanded = !item->as.treeItem.expanded;
|
|
|
|
// Clamp scroll positions if collapsing reduced content size
|
|
if (!item->as.treeItem.expanded) {
|
|
int32_t newTotalH;
|
|
int32_t newTotalW;
|
|
int32_t newInnerH;
|
|
int32_t newInnerW;
|
|
bool newNeedVSb;
|
|
bool newNeedHSb;
|
|
|
|
treeCalcScrollbarNeeds(hit, font, &newTotalH, &newTotalW, &newInnerH, &newInnerW, &newNeedVSb, &newNeedHSb);
|
|
|
|
int32_t newMaxScrlV = newTotalH - newInnerH;
|
|
int32_t newMaxScrlH = newTotalW - newInnerW;
|
|
|
|
if (newMaxScrlV < 0) {
|
|
newMaxScrlV = 0;
|
|
}
|
|
|
|
if (newMaxScrlH < 0) {
|
|
newMaxScrlH = 0;
|
|
}
|
|
|
|
hit->as.treeView.scrollPos = clampInt(hit->as.treeView.scrollPos, 0, newMaxScrlV);
|
|
hit->as.treeView.scrollPosH = clampInt(hit->as.treeView.scrollPosH, 0, newMaxScrlH);
|
|
}
|
|
|
|
if (item->onChange) {
|
|
item->onChange(item);
|
|
}
|
|
} else {
|
|
if (item->onClick) {
|
|
item->onClick(item);
|
|
}
|
|
}
|
|
} else {
|
|
if (item->onClick) {
|
|
item->onClick(item);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// ============================================================
|
|
// widgetTreeViewPaint
|
|
// ============================================================
|
|
|
|
void widgetTreeViewPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors) {
|
|
uint32_t bg = w->bgColor ? w->bgColor : colors->contentBg;
|
|
|
|
int32_t totalH;
|
|
int32_t totalW;
|
|
int32_t innerH;
|
|
int32_t innerW;
|
|
bool needVSb;
|
|
bool needHSb;
|
|
|
|
treeCalcScrollbarNeeds(w, font, &totalH, &totalW, &innerH, &innerW, &needVSb, &needHSb);
|
|
|
|
// Clamp scroll positions
|
|
int32_t maxScrollV = totalH - innerH;
|
|
int32_t maxScrollH = totalW - innerW;
|
|
|
|
if (maxScrollV < 0) {
|
|
maxScrollV = 0;
|
|
}
|
|
|
|
if (maxScrollH < 0) {
|
|
maxScrollH = 0;
|
|
}
|
|
|
|
w->as.treeView.scrollPos = clampInt(w->as.treeView.scrollPos, 0, maxScrollV);
|
|
w->as.treeView.scrollPosH = clampInt(w->as.treeView.scrollPosH, 0, maxScrollH);
|
|
|
|
// Sunken border
|
|
BevelStyleT bevel = BEVEL_SUNKEN(colors, bg, 2);
|
|
drawBevel(d, ops, w->x, w->y, w->w, w->h, &bevel);
|
|
|
|
// Set clip rect to inner content area (excludes scrollbars)
|
|
int32_t oldClipX = d->clipX;
|
|
int32_t oldClipY = d->clipY;
|
|
int32_t oldClipW = d->clipW;
|
|
int32_t oldClipH = d->clipH;
|
|
setClipRect(d, w->x + TREE_BORDER, w->y + TREE_BORDER, innerW, innerH);
|
|
|
|
// Paint tree items offset by both scroll positions
|
|
int32_t itemY = w->y + TREE_BORDER - w->as.treeView.scrollPos;
|
|
int32_t baseX = w->x + TREE_BORDER - w->as.treeView.scrollPosH;
|
|
|
|
paintTreeItems(w, d, ops, font, colors,
|
|
baseX, &itemY, 0,
|
|
w->y + TREE_BORDER, w->y + TREE_BORDER + innerH,
|
|
w->as.treeView.selectedItem);
|
|
|
|
// Restore clip rect
|
|
setClipRect(d, oldClipX, oldClipY, oldClipW, oldClipH);
|
|
|
|
// Draw scrollbars
|
|
if (needVSb) {
|
|
drawTreeVScrollbar(w, d, ops, colors, totalH, innerH);
|
|
}
|
|
|
|
if (needHSb) {
|
|
drawTreeHScrollbar(w, d, ops, colors, totalW, innerW, needVSb);
|
|
}
|
|
|
|
if (w->focused) {
|
|
uint32_t fg = w->fgColor ? w->fgColor : colors->contentFg;
|
|
drawFocusRect(d, ops, w->x + 1, w->y + 1, w->w - 2, w->h - 2, fg);
|
|
}
|
|
}
|