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DVX_GUI/dvx/widgets/widgetInternal.h

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// widgetInternal.h — Shared internal header for widget implementation files
#ifndef WIDGET_INTERNAL_H
#define WIDGET_INTERNAL_H
#include "../dvxWidget.h"
#include "../dvxApp.h"
#include "../dvxDraw.h"
#include "../dvxWm.h"
#include "../dvxVideo.h"
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
// ============================================================
// Widget class vtable
// ============================================================
#define WCLASS_FOCUSABLE 0x0001
#define WCLASS_BOX_CONTAINER 0x0002
#define WCLASS_HORIZ_CONTAINER 0x0004
#define WCLASS_PAINTS_CHILDREN 0x0008
#define WCLASS_NO_HIT_RECURSE 0x0010
typedef struct WidgetClassT {
uint32_t flags;
void (*paint)(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void (*paintOverlay)(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void (*calcMinSize)(WidgetT *w, const BitmapFontT *font);
void (*layout)(WidgetT *w, const BitmapFontT *font);
void (*onMouse)(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
void (*onKey)(WidgetT *w, int32_t key, int32_t mod);
void (*destroy)(WidgetT *w);
const char *(*getText)(const WidgetT *w);
void (*setText)(WidgetT *w, const char *text);
} WidgetClassT;
extern const WidgetClassT *widgetClassTable[];
// ============================================================
// Validation macros
// ============================================================
#define VALIDATE_WIDGET(w, wtype, retval) \
do { if (!(w) || (w)->type != (wtype)) { return (retval); } } while (0)
#define VALIDATE_WIDGET_VOID(w, wtype) \
do { if (!(w) || (w)->type != (wtype)) { return; } } while (0)
// ============================================================
// Constants
// ============================================================
// Modifier flags (BIOS INT 16h shift state bits)
#define KEY_MOD_SHIFT 0x03
#define KEY_MOD_CTRL 0x04
#define KEY_MOD_ALT 0x08
#define DEFAULT_SPACING 4
#define DEFAULT_PADDING 4
#define SEPARATOR_THICKNESS 2
#define BUTTON_PAD_H 8
#define BUTTON_PAD_V 4
#define CHECKBOX_BOX_SIZE 12
#define CHECKBOX_GAP 4
#define FRAME_BEVEL_BORDER 2
#define FRAME_FLAT_BORDER 1
#define TEXT_INPUT_PAD 3
#define DROPDOWN_BTN_WIDTH 16
#define DROPDOWN_MAX_VISIBLE 8
#define SLIDER_TRACK_H 4
#define SLIDER_THUMB_W 11
#define TAB_PAD_H 8
#define TAB_PAD_V 4
#define TAB_BORDER 2
#define LISTBOX_BORDER 2
#define LISTVIEW_BORDER 2
#define TREE_INDENT 16
#define TREE_EXPAND_SIZE 9
#define TREE_ICON_GAP 4
#define TREE_BORDER 2
#define WGT_SB_W 14
#define TREE_MIN_ROWS 4
#define SB_MIN_THUMB 14
#define SPLITTER_BAR_W 5
#define SPLITTER_MIN_PANE 20
// ============================================================
// Inline helpers
// ============================================================
static inline int32_t clampInt(int32_t val, int32_t lo, int32_t hi) {
if (val < lo) { return lo; }
if (val > hi) { return hi; }
return val;
}
// Classic Windows 3.1 embossed (etched) text for disabled widgets:
// Draw text at +1,+1 in highlight, then at 0,0 in shadow.
static inline void drawTextEmbossed(DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, int32_t x, int32_t y, const char *text, const ColorSchemeT *colors) {
drawText(d, ops, font, x + 1, y + 1, text, colors->windowHighlight, 0, false);
drawText(d, ops, font, x, y, text, colors->windowShadow, 0, false);
}
static inline void drawTextAccelEmbossed(DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, int32_t x, int32_t y, const char *text, const ColorSchemeT *colors) {
drawTextAccel(d, ops, font, x + 1, y + 1, text, colors->windowHighlight, 0, false);
drawTextAccel(d, ops, font, x, y, text, colors->windowShadow, 0, false);
}
// ============================================================
// Shared state (defined in widgetCore.c)
// ============================================================
extern bool sDebugLayout;
extern WidgetT *sClosedPopup;
extern WidgetT *sFocusedWidget;
extern WidgetT *sKeyPressedBtn;
extern WidgetT *sOpenPopup;
extern WidgetT *sPressedButton;
extern WidgetT *sDragSlider;
extern WidgetT *sDrawingCanvas;
extern WidgetT *sDragTextSelect;
extern int32_t sDragOffset;
extern WidgetT *sResizeListView;
extern int32_t sResizeCol;
extern int32_t sResizeStartX;
extern int32_t sResizeOrigW;
extern WidgetT *sDragSplitter;
extern int32_t sDragSplitStart;
extern WidgetT *sDragReorder;
// ============================================================
// Core functions (widgetCore.c)
// ============================================================
void widgetAddChild(WidgetT *parent, WidgetT *child);
WidgetT *widgetAlloc(WidgetT *parent, WidgetTypeE type);
void widgetClearFocus(WidgetT *root);
int32_t widgetCountVisibleChildren(const WidgetT *w);
void widgetDestroyChildren(WidgetT *w);
void widgetDropdownPopupRect(WidgetT *w, const BitmapFontT *font, int32_t contentH, int32_t *popX, int32_t *popY, int32_t *popW, int32_t *popH);
WidgetT *widgetFindByAccel(WidgetT *root, char key);
WidgetT *widgetFindNextFocusable(WidgetT *root, WidgetT *after);
WidgetT *widgetFindPrevFocusable(WidgetT *root, WidgetT *before);
int32_t widgetFrameBorderWidth(const WidgetT *w);
WidgetT *widgetHitTest(WidgetT *w, int32_t x, int32_t y);
bool widgetIsFocusable(WidgetTypeE type);
bool widgetIsBoxContainer(WidgetTypeE type);
bool widgetIsHorizContainer(WidgetTypeE type);
int32_t widgetNavigateIndex(int32_t key, int32_t current, int32_t count, int32_t pageSize);
void widgetPaintPopupList(DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors, int32_t popX, int32_t popY, int32_t popW, int32_t popH, const char **items, int32_t itemCount, int32_t hoverIdx, int32_t scrollPos);
void widgetRemoveChild(WidgetT *parent, WidgetT *child);
void widgetScrollbarThumb(int32_t trackLen, int32_t totalSize, int32_t visibleSize, int32_t scrollPos, int32_t *thumbPos, int32_t *thumbSize);
// ============================================================
// Shared scrollbar functions (widgetScrollbar.c)
// ============================================================
typedef enum {
ScrollHitNoneE,
ScrollHitArrowDecE,
ScrollHitArrowIncE,
ScrollHitPageDecE,
ScrollHitPageIncE,
ScrollHitThumbE
} ScrollHitE;
void widgetDrawScrollbarH(DisplayT *d, const BlitOpsT *ops, const ColorSchemeT *colors, int32_t sbX, int32_t sbY, int32_t sbW, int32_t totalSize, int32_t visibleSize, int32_t scrollPos);
void widgetDrawScrollbarV(DisplayT *d, const BlitOpsT *ops, const ColorSchemeT *colors, int32_t sbX, int32_t sbY, int32_t sbH, int32_t totalSize, int32_t visibleSize, int32_t scrollPos);
ScrollHitE widgetScrollbarHitTest(int32_t sbLen, int32_t relPos, int32_t totalSize, int32_t visibleSize, int32_t scrollPos);
// ============================================================
// Layout functions (widgetLayout.c)
// ============================================================
void widgetCalcMinSizeBox(WidgetT *w, const BitmapFontT *font);
void widgetCalcMinSizeTree(WidgetT *w, const BitmapFontT *font);
void widgetLayoutBox(WidgetT *w, const BitmapFontT *font);
void widgetLayoutChildren(WidgetT *w, const BitmapFontT *font);
// ============================================================
// Event functions (widgetEvent.c)
// ============================================================
void widgetManageScrollbars(WindowT *win, AppContextT *ctx);
void widgetOnKey(WindowT *win, int32_t key, int32_t mod);
void widgetOnMouse(WindowT *win, int32_t x, int32_t y, int32_t buttons);
void widgetOnPaint(WindowT *win, RectT *dirtyArea);
void widgetOnResize(WindowT *win, int32_t newW, int32_t newH);
void widgetOnScroll(WindowT *win, ScrollbarOrientE orient, int32_t value);
// ============================================================
// Paint/ops functions (widgetOps.c)
// ============================================================
void widgetPaintOne(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetPaintOverlays(WidgetT *root, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
// ============================================================
// Per-widget paint functions
// ============================================================
void widgetAnsiTermPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetButtonPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetImageButtonPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetCanvasPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetCheckboxPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetComboBoxPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetComboBoxPaintPopup(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetDropdownPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetDropdownPaintPopup(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetFramePaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetImagePaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetLabelPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetListBoxPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetListViewPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
bool widgetListViewColBorderHit(const WidgetT *w, int32_t vx, int32_t vy);
void widgetProgressBarPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetRadioPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetSeparatorPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetScrollPanePaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetSplitterPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetSliderPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetSpinnerPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetStatusBarPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetTabControlPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetTextAreaPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetTextInputPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetToolbarPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
void widgetTreeViewPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors);
// ============================================================
// Per-widget calcMinSize functions
// ============================================================
void widgetAnsiTermCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetButtonCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetImageButtonCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetCanvasCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetCheckboxCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetComboBoxCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetDropdownCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetImageCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetLabelCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetListBoxCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetListViewCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetProgressBarCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetRadioCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetSeparatorCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetScrollPaneCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetSplitterCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetSliderCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetSpinnerCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetSpacerCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetTabControlCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetTextAreaCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetTextInputCalcMinSize(WidgetT *w, const BitmapFontT *font);
void widgetTreeViewCalcMinSize(WidgetT *w, const BitmapFontT *font);
// ============================================================
// Per-widget layout functions (for special containers)
// ============================================================
void widgetScrollPaneLayout(WidgetT *w, const BitmapFontT *font);
void widgetSplitterLayout(WidgetT *w, const BitmapFontT *font);
void widgetTabControlLayout(WidgetT *w, const BitmapFontT *font);
void widgetTreeViewLayout(WidgetT *w, const BitmapFontT *font);
// ============================================================
// Per-widget getText/setText functions
// ============================================================
const char *widgetButtonGetText(const WidgetT *w);
void widgetButtonSetText(WidgetT *w, const char *text);
const char *widgetCheckboxGetText(const WidgetT *w);
void widgetCheckboxSetText(WidgetT *w, const char *text);
const char *widgetComboBoxGetText(const WidgetT *w);
void widgetComboBoxSetText(WidgetT *w, const char *text);
const char *widgetDropdownGetText(const WidgetT *w);
const char *widgetLabelGetText(const WidgetT *w);
void widgetLabelSetText(WidgetT *w, const char *text);
const char *widgetRadioGetText(const WidgetT *w);
void widgetRadioSetText(WidgetT *w, const char *text);
const char *widgetTextAreaGetText(const WidgetT *w);
void widgetTextAreaSetText(WidgetT *w, const char *text);
const char *widgetTextInputGetText(const WidgetT *w);
void widgetTextInputSetText(WidgetT *w, const char *text);
const char *widgetTreeItemGetText(const WidgetT *w);
void widgetTreeItemSetText(WidgetT *w, const char *text);
// ============================================================
// Per-widget destroy functions
// ============================================================
void widgetAnsiTermDestroy(WidgetT *w);
void widgetCanvasDestroy(WidgetT *w);
void widgetComboBoxDestroy(WidgetT *w);
void widgetImageButtonDestroy(WidgetT *w);
void widgetImageDestroy(WidgetT *w);
void widgetListBoxDestroy(WidgetT *w);
void widgetListViewDestroy(WidgetT *w);
void widgetTextAreaDestroy(WidgetT *w);
void widgetTextInputDestroy(WidgetT *w);
// ============================================================
// Per-widget mouse/key functions
// ============================================================
void clearOtherSelections(WidgetT *except);
void clipboardCopy(const char *text, int32_t len);
const char *clipboardGet(int32_t *outLen);
bool isWordChar(char c);
int32_t multiClickDetect(int32_t vx, int32_t vy);
void widgetAnsiTermOnKey(WidgetT *w, int32_t key, int32_t mod);
void widgetAnsiTermOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
void widgetButtonOnKey(WidgetT *w, int32_t key, int32_t mod);
void widgetButtonOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
void widgetCanvasOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
void widgetCheckboxOnKey(WidgetT *w, int32_t key, int32_t mod);
void widgetCheckboxOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
void widgetComboBoxOnKey(WidgetT *w, int32_t key, int32_t mod);
void widgetComboBoxOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
void widgetDropdownOnKey(WidgetT *w, int32_t key, int32_t mod);
void widgetDropdownOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
void widgetImageButtonOnKey(WidgetT *w, int32_t key, int32_t mod);
void widgetImageButtonOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
void widgetImageOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
void widgetListBoxOnKey(WidgetT *w, int32_t key, int32_t mod);
void widgetListBoxOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
void widgetListViewOnKey(WidgetT *w, int32_t key, int32_t mod);
void widgetListViewOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
void widgetRadioOnKey(WidgetT *w, int32_t key, int32_t mod);
void widgetRadioOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
void widgetScrollPaneOnKey(WidgetT *w, int32_t key, int32_t mod);
void widgetScrollPaneOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
void widgetSplitterClampPos(WidgetT *w, int32_t *pos);
void widgetSplitterOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
void widgetSliderOnKey(WidgetT *w, int32_t key, int32_t mod);
void widgetSliderOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
void widgetSpinnerOnKey(WidgetT *w, int32_t key, int32_t mod);
void widgetSpinnerOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
const char *widgetSpinnerGetText(const WidgetT *w);
void widgetSpinnerSetText(WidgetT *w, const char *text);
void widgetTabControlOnKey(WidgetT *w, int32_t key, int32_t mod);
void widgetTabControlOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
void widgetTextAreaOnKey(WidgetT *w, int32_t key, int32_t mod);
void widgetTextAreaOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
void widgetTextDragUpdate(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
void widgetTextEditOnKey(WidgetT *w, int32_t key, int32_t mod, char *buf, int32_t bufSize, int32_t *pLen, int32_t *pCursor, int32_t *pScrollOff, int32_t *pSelStart, int32_t *pSelEnd, char *undoBuf, int32_t *pUndoLen, int32_t *pUndoCursor);
void widgetTextInputOnKey(WidgetT *w, int32_t key, int32_t mod);
void widgetTextInputOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
int32_t wordEnd(const char *buf, int32_t len, int32_t pos);
int32_t wordStart(const char *buf, int32_t pos);
void widgetTreeViewOnKey(WidgetT *w, int32_t key, int32_t mod);
void widgetTreeViewOnMouse(WidgetT *w, WidgetT *root, int32_t vx, int32_t vy);
// Drag-reorder helpers (dispatch to ListBox/ListView/TreeView)
void widgetReorderUpdate(WidgetT *w, WidgetT *root, int32_t x, int32_t y);
void widgetReorderDrop(WidgetT *w);
WidgetT *widgetTreeViewNextVisible(WidgetT *item, WidgetT *treeView);
#endif // WIDGET_INTERNAL_H
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