Slider.c
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上传日期:2017-08-10
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文件大小:10k
- /*
- *********************************************************************************************************
- * uC/GUI
- * Universal graphic software for embedded applications
- *
- * (c) Copyright 2002, Micrium Inc., Weston, FL
- * (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
- *
- * 礐/GUI is protected by international copyright laws. Knowledge of the
- * source code may not be used to write a similar product. This file may
- * only be used in accordance with a license and should not be redistributed
- * in any way. We appreciate your understanding and fairness.
- *
- ----------------------------------------------------------------------
- File : SLIDER.c
- Purpose : SLIDER for new emWin GSC widgets
- ---------------------------END-OF-HEADER------------------------------
- */
- #include <stdlib.h>
- #include <string.h>
- #include "GUI_Private.H"
- #include "SLIDER.h"
- #include "Widget.h"
- #if GUI_WINSUPPORT
- /*********************************************************************
- *
- * Private config defaults
- *
- **********************************************************************
- */
- /* Support for 3D effects */
- #ifndef SLIDER_USE_3D
- #define SLIDER_USE_3D 1
- #endif
- /* Define colors */
- #ifndef SLIDER_BKCOLOR0_DEFAULT
- #define SLIDER_BKCOLOR0_DEFAULT 0xc0c0c0
- #endif
- #ifndef SLIDER_BKCOLOR1_DEFAULT
- #define SLIDER_BKCOLOR1_DEFAULT GUI_WHITE
- #endif
- #ifndef SLIDER_COLOR0_DEFAULT
- #define SLIDER_COLOR0_DEFAULT 0xc0c0c0
- #endif
- #ifndef SLIDER_COLOR1_DEFAULT
- #define SLIDER_COLOR1_DEFAULT GUI_BLACK
- #endif
- /*********************************************************************
- *
- * Object definition
- *
- **********************************************************************
- */
- typedef struct {
- WIDGET Widget;
- GUI_COLOR aBkColor[2];
- GUI_COLOR aColor[2];
- int Min, Max, v;
- int Flags;
- int NumSections;
- I16 Width;
- #if GUI_DEBUG_LEVEL >1
- int DebugId;
- #endif
- } SLIDER_Obj;
- /*********************************************************************
- *
- * Static data
- *
- **********************************************************************
- */
- /* None */
- /*********************************************************************
- *
- * Macros for internal use
- *
- **********************************************************************
- */
- #define SLIDER_ID 0x4544 /* Magic numer, should be unique if possible */
- #define SLIDER_H2P(h) (SLIDER_Obj*) WM_H2P(h)
- #ifdef _DEBUG
- #define SLIDER_ASSERT_IS_VALID_PTR(p) DEBUG_ERROROUT_IF(p->DebugId != SLIDER_ID, "xxx.c: Wrong handle type or Object not init'ed")
- #define SLIDER_INIT_ID(p) p->DebugId = SLIDER_ID
- #define SLIDER_DEINIT_ID(p) p->DebugId = SLIDER_ID+1
- #else
- #define SLIDER_ASSERT_IS_VALID_PTR(p)
- #define SLIDER_INIT_ID(p)
- #define SLIDER_DEINIT_ID(p)
- #endif
- /*********************************************************************
- *
- * Static routines
- *
- **********************************************************************
- */
- /*********************************************************************
- *
- * _Paint
- */
- static void _Paint(SLIDER_Obj* pObj/*, GUI_RECT*pRect*/) {
- int i;
- int xsize;
- int x0;
- GUI_RECT r, rFocus, rSlider, rSlot;
- WIDGET__GetClientRect(&pObj->Widget, &rFocus);
- GUI__ReduceRect(&r, &rFocus, 1);
- xsize = r.x1 - r.x0 + 1 - pObj->Width /*- 2*xSizeEffect*/;
- x0 = r.x0 + pObj->Width / 2;
- GUI_SetBkColor(pObj->aBkColor[0]);
- GUI_Clear();
- /* Calculate Slider position */
- rSlider = r;
- rSlider.y0 = 5;
- rSlider.x0 = x0 + xsize * (pObj->v - pObj->Min) / (pObj->Max - pObj->Min) - pObj->Width/2;
- rSlider.x1 = rSlider.x0 + pObj->Width;
- /* Calculate Slot position */
- rSlot.x0 = x0;
- rSlot.x1 = x0 + xsize;
- rSlot.y0 = (rSlider.y0 + rSlider.y1) /2 -1;
- rSlot.y1 = rSlot.y0 +3;
- WIDGET__EFFECT_DrawDownRect(&pObj->Widget, &rSlot); /* Draw slot */
- /* Draw the ticks */
- GUI_SetColor(GUI_BLACK);
- for (i = 0; i <= pObj->NumSections; i++) {
- int x = x0 + xsize * i / pObj->NumSections;
- WIDGET__DrawVLine(&pObj->Widget, x, 1, 3);
- }
- /* Draw the slider itself */
- GUI_SetColor(pObj->aColor[0]);
- WIDGET__FillRectEx(&pObj->Widget, &rSlider);
- GUI_SetColor(GUI_BLACK);
- WIDGET__EFFECT_DrawUpRect(&pObj->Widget, &rSlider);
- /* Draw focus */
- if (pObj->Widget.State & WIDGET_STATE_FOCUS) {
- GUI_SetColor(GUI_BLACK);
- WIDGET__DrawFocusRect(&pObj->Widget, &rFocus, 0);
- }
- }
- /*********************************************************************
- *
- * _OnTouch
- */
- static void _OnTouch(SLIDER_Handle hObj, SLIDER_Obj* pObj, WM_MESSAGE*pMsg) {
- GUI_TOUCH_tState* pState = (GUI_TOUCH_tState*)pMsg->Data.p;
- if (pMsg->Data.p) { /* Something happened in our area (pressed or released) */
- if (pState->Pressed) {
- int Sel;
- int Range = (pObj->Max - pObj->Min);
- int x0, xsize;
- int x;
- x0 = 1 + pObj->Width/2; /* 1 pixel focus rectangle + width of actual slider */
- x = (pObj->Widget.State & WIDGET_STATE_VERTICAL) ? pState->y : pState->x;
- x -= x0;
- xsize = WIDGET__GetWindowSizeX(hObj) - 2 * x0;
- if (x <= 0) {
- Sel = pObj->Min;
- } else if (x >= xsize) {
- Sel = pObj->Max;
- } else {
- Sel = GUI__DivideRound(Range* x, xsize);
- Sel += pObj->Min;
- }
- WM_SetFocus(hObj);
- WM_SetCapture(hObj, 1);
- SLIDER_SetValue(hObj, Sel);
- }
- }
- }
- /*********************************************************************
- *
- * _OnKey
- */
- static void _OnKey(SLIDER_Handle hObj, WM_MESSAGE*pMsg) {
- WM_KEY_INFO* pKeyInfo;
- int Key;
- pKeyInfo = (WM_KEY_INFO*)(pMsg->Data.p);
- Key = pKeyInfo->Key;
- if (pKeyInfo->PressedCnt > 0) {
- switch (Key) {
- case GUI_KEY_RIGHT:
- SLIDER_Inc(hObj);
- break; /* Send to parent by not doing anything */
- case GUI_KEY_LEFT:
- SLIDER_Dec(hObj);
- break; /* Send to parent by not doing anything */
- default:
- return;
- }
- }
- }
- /*********************************************************************
- *
- * _SLIDER_Callback
- */
- static void _SLIDER_Callback (WM_MESSAGE *pMsg) {
- SLIDER_Handle hObj;
- SLIDER_Obj* pObj;
- hObj = pMsg->hWin;
- pObj = SLIDER_H2P(hObj);
- /* Let widget handle the standard messages */
- if (WIDGET_HandleActive(hObj, pMsg) == 0) {
- return;
- }
- switch (pMsg->MsgId) {
- case WM_PAINT:
- GUI_DEBUG_LOG("SLIDER: _Callback(WM_PAINT)n");
- _Paint(pObj);
- return;
- case WM_TOUCH:
- _OnTouch(hObj, pObj, pMsg);
- break;
- case WM_KEY:
- _OnKey(hObj, pMsg);
- break;
- }
- WM_DefaultProc(pMsg);
- }
- /*********************************************************************
- *
- * Exported routines: Create
- *
- **********************************************************************
- */
- /* Note: the parameters to a create function may vary.
- Some widgets may have multiple create functions */
- SLIDER_Handle SLIDER_Create (int x0, int y0, int xsize, int ysize, WM_HWIN hParent, int Id, int WinFlags, int SpecialFlags) {
- SLIDER_Handle hObj;
- /* Create the window */
- WM_LOCK();
- hObj = WM_CreateWindowAsChild(x0, y0, xsize, ysize, hParent,
- WinFlags, _SLIDER_Callback, sizeof(SLIDER_Obj)-sizeof(WM_Obj));
- if (hObj) {
- SLIDER_Obj* pObj = SLIDER_H2P(hObj);
- U16 InitState;
- /* Handle SpecialFlags */
- InitState = WIDGET_STATE_ENABLED;
- if (SpecialFlags & SLIDER_CF_VERTICAL) {
- InitState |= WIDGET_CF_VERTICAL;
- }
- /* init widget specific variables */
- WIDGET__Init(&pObj->Widget, InitState);
- /* init member variables */
- SLIDER_INIT_ID(pObj);
- pObj->Widget.Id = Id;
- pObj->aBkColor[0] = SLIDER_BKCOLOR0_DEFAULT;
- pObj->aBkColor[1] = SLIDER_BKCOLOR1_DEFAULT;
- pObj->aColor[0] = SLIDER_COLOR0_DEFAULT;
- pObj->aColor[1] = SLIDER_COLOR1_DEFAULT;
- pObj->Width = 8;
- pObj->Max =100;
- pObj->Min =0;
- pObj->NumSections = 10;
- } else {
- GUI_DEBUG_ERROROUT_IF(hObj==0, "SLIDER_Create failed")
- }
- WM_UNLOCK();
- return hObj;
- }
- SLIDER_Handle SLIDER_CreateIndirect(const GUI_WIDGET_CREATE_INFO* pCreateInfo, WM_HWIN hWinParent, int x0, int y0, WM_CALLBACK* cb) {
- SLIDER_Handle hThis;
- GUI_USE_PARA(cb);
- hThis = SLIDER_Create(pCreateInfo->x0 + x0, pCreateInfo->y0 + y0, pCreateInfo->xSize, pCreateInfo->ySize,
- hWinParent, pCreateInfo->Id, 0, pCreateInfo->Flags);
- return hThis;
- }
- /*********************************************************************
- *
- * Exported routines: Various methods
- *
- **********************************************************************
- */
- void SLIDER_Dec(SLIDER_Handle hObj) {
- SLIDER_Obj* pObj;
- if (hObj) {
- WM_LOCK();
- pObj = SLIDER_H2P(hObj);
- if (pObj->v > pObj->Min) {
- pObj->v--;
- WM_InvalidateWindow(hObj);
- WM_NotifyParent(hObj, WM_NOTIFICATION_VALUE_CHANGED);
- }
- WM_UNLOCK();
- }
- }
- void SLIDER_Inc(SLIDER_Handle hObj) {
- SLIDER_Obj* pObj;
- if (hObj) {
- WM_LOCK();
- pObj = SLIDER_H2P(hObj);
- if (pObj->v < pObj->Max) {
- pObj->v++;
- WM_InvalidateWindow(hObj);
- WM_NotifyParent(hObj, WM_NOTIFICATION_VALUE_CHANGED);
- }
- WM_UNLOCK();
- }
- }
- void SLIDER_SetWidth(SLIDER_Handle hObj, int Width) {
- SLIDER_Obj* pObj;
- if (hObj) {
- WM_LOCK();
- pObj = SLIDER_H2P(hObj);
- if (pObj->Width != Width) {
- pObj->Width = Width;
- WM_InvalidateWindow(hObj);
- }
- WM_UNLOCK();
- }
- }
- void SLIDER_SetValue(SLIDER_Handle hObj, int v) {
- SLIDER_Obj* pObj;
- if (hObj) {
- WM_LOCK();
- pObj = SLIDER_H2P(hObj);
- /* Put in min/max range */
- if (v < pObj->Min) {
- v = pObj->Min;
- }
- if (v > pObj->Max) {
- v = pObj->Max;
- }
- if (pObj->v != v) {
- pObj->v = v;
- WM_InvalidateWindow(hObj);
- WM_NotifyParent(hObj, WM_NOTIFICATION_VALUE_CHANGED);
- }
- WM_UNLOCK();
- }
- }
- void SLIDER_SetRange(SLIDER_Handle hObj, int Min, int Max) {
- SLIDER_Obj* pObj;
- if (hObj) {
- WM_LOCK();
- pObj = SLIDER_H2P(hObj);
- pObj->Min = Min;
- pObj->Max = Max;
- WM_InvalidateWindow(hObj);
- WM_UNLOCK();
- }
- }
- /*********************************************************************
- *
- * Query state
- *
- **********************************************************************
- */
- int SLIDER_GetValue(SLIDER_Handle hObj) {
- int r = 0;
- SLIDER_Obj* pObj;
- if (hObj) {
- WM_LOCK();
- pObj = SLIDER_H2P(hObj);
- r = pObj->v;
- WM_UNLOCK();
- }
- return r;
- }
- #endif /* #if GUI_WINSUPPORT */