479 lines
16 KiB
C
479 lines
16 KiB
C
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// =======================================================================
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// GUIslice library (extensions)
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// - Calvin Hass
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// - https://www.impulseadventure.com/elec/guislice-gui.html
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// - https://github.com/ImpulseAdventure/GUIslice
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// =======================================================================
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//
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// The MIT License
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//
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// Copyright 2016-2020 Calvin Hass
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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// =======================================================================
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/// \file XSlider.c
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// GUIslice library
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#include "GUIslice.h"
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#include "GUIslice_drv.h"
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#include "XSlider.h"
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#include <stdio.h>
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#if (GSLC_USE_PROGMEM)
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#include <avr/pgmspace.h>
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#endif
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// ----------------------------------------------------------------------------
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// Error Messages
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// ----------------------------------------------------------------------------
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extern const char GSLC_PMEM ERRSTR_NULL[];
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extern const char GSLC_PMEM ERRSTR_PXD_NULL[];
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// ----------------------------------------------------------------------------
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// Extended element definitions
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// ----------------------------------------------------------------------------
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//
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// - This file extends the core GUIslice functionality with
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// additional widget types
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//
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// ----------------------------------------------------------------------------
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// ============================================================================
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// Extended Element: Slider
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// - A linear slider control
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// ============================================================================
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// Create a slider element and add it to the GUI element list
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// - Defines default styling for the element
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// - Defines callback for redraw and touch
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gslc_tsElemRef* gslc_ElemXSliderCreate(gslc_tsGui* pGui,int16_t nElemId,int16_t nPage,
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gslc_tsXSlider* pXData,gslc_tsRect rElem,int16_t nPosMin,int16_t nPosMax,int16_t nPos,
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uint16_t nThumbSz,bool bVert)
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{
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if ((pGui == NULL) || (pXData == NULL)) {
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static const char GSLC_PMEM FUNCSTR[] = "ElemXSliderCreate";
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GSLC_DEBUG2_PRINT_CONST(ERRSTR_NULL,FUNCSTR);
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return NULL;
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}
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gslc_tsElem sElem;
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gslc_tsElemRef* pElemRef = NULL;
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sElem = gslc_ElemCreate(pGui,nElemId,nPage,GSLC_TYPEX_SLIDER,rElem,NULL,0,GSLC_FONT_NONE);
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sElem.nFeatures &= ~GSLC_ELEM_FEA_FRAME_EN;
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sElem.nFeatures |= GSLC_ELEM_FEA_FILL_EN;
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sElem.nFeatures |= GSLC_ELEM_FEA_CLICK_EN;
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sElem.nFeatures |= GSLC_ELEM_FEA_GLOW_EN;
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sElem.nGroup = GSLC_GROUP_ID_NONE;
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// Range check on nPos
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if (nPos < nPosMin) { nPos = nPosMin; }
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if (nPos > nPosMax) { nPos = nPosMax; }
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pXData->nPosMin = nPosMin;
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pXData->nPosMax = nPosMax;
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pXData->nPos = nPos;
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pXData->nThumbSz = nThumbSz;
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pXData->bVert = bVert;
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pXData->bTrim = false;
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pXData->colTrim = GSLC_COL_BLACK;
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pXData->nTickDiv = 0;
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pXData->pfuncXPos = NULL;
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sElem.pXData = (void*)(pXData);
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// Specify the custom drawing callback
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sElem.pfuncXDraw = &gslc_ElemXSliderDraw;
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// Specify the custom touch tracking callback
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sElem.pfuncXTouch = &gslc_ElemXSliderTouch;
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sElem.colElemFill = GSLC_COL_BLACK;
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sElem.colElemFillGlow = GSLC_COL_BLACK;
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sElem.colElemFrame = GSLC_COL_GRAY;
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sElem.colElemFrameGlow = GSLC_COL_WHITE;
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if (nPage != GSLC_PAGE_NONE) {
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pElemRef = gslc_ElemAdd(pGui,nPage,&sElem,GSLC_ELEMREF_DEFAULT);
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return pElemRef;
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#if (GSLC_FEATURE_COMPOUND)
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} else {
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// Save as temporary element
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pGui->sElemTmp = sElem;
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pGui->sElemRefTmp.pElem = &(pGui->sElemTmp);
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pGui->sElemRefTmp.eElemFlags = GSLC_ELEMREF_DEFAULT | GSLC_ELEMREF_REDRAW_FULL;
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return &(pGui->sElemRefTmp);
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#endif
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}
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return NULL;
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}
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void gslc_ElemXSliderSetStyle(gslc_tsGui* pGui,gslc_tsElemRef* pElemRef,
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bool bTrim,gslc_tsColor colTrim,uint16_t nTickDiv,
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int16_t nTickLen,gslc_tsColor colTick)
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{
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if (pElemRef == NULL) {
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static const char GSLC_PMEM FUNCSTR[] = "ElemXSliderSetStyle";
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GSLC_DEBUG2_PRINT_CONST(ERRSTR_NULL,FUNCSTR);
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return;
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}
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gslc_tsElem* pElem = gslc_GetElemFromRef(pGui,pElemRef);
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gslc_tsXSlider* pSlider = (gslc_tsXSlider*)(pElem->pXData);
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pSlider->bTrim = bTrim;
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pSlider->colTrim = colTrim;
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pSlider->nTickDiv = nTickDiv;
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pSlider->nTickLen = nTickLen;
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pSlider->colTick = colTick;
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// Update
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gslc_ElemSetRedraw(pGui,pElemRef,GSLC_REDRAW_FULL);
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}
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int gslc_ElemXSliderGetPos(gslc_tsGui* pGui,gslc_tsElemRef* pElemRef)
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{
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if (pElemRef == NULL) {
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static const char GSLC_PMEM FUNCSTR[] = "ElemXSliderGetPos";
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GSLC_DEBUG2_PRINT_CONST(ERRSTR_NULL,FUNCSTR);
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return 0;
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}
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gslc_tsElem* pElem = gslc_GetElemFromRef(pGui,pElemRef);
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gslc_tsXSlider* pSlider = (gslc_tsXSlider*)(pElem->pXData);
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return pSlider->nPos;
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}
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// Update the slider control's current state
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void gslc_ElemXSliderSetPos(gslc_tsGui* pGui,gslc_tsElemRef* pElemRef,int16_t nPos)
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{
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if ((pGui == NULL) || (pElemRef == NULL)) {
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static const char GSLC_PMEM FUNCSTR[] = "ElemXSliderSetPos";
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GSLC_DEBUG2_PRINT_CONST(ERRSTR_NULL,FUNCSTR);
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return;
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}
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gslc_tsElem* pElem = gslc_GetElemFromRef(pGui,pElemRef);
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gslc_tsXSlider* pSlider = (gslc_tsXSlider*)(pElem->pXData);
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int16_t nPosOld;
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// Clip position
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if (nPos < pSlider->nPosMin) { nPos = pSlider->nPosMin; }
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else if (nPos > pSlider->nPosMax) { nPos = pSlider->nPosMax; }
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// Update
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nPosOld = pSlider->nPos;
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pSlider->nPos = nPos;
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// Only update if changed
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if (nPos != nPosOld) {
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// If any position callback is defined, call it now
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if (pSlider->pfuncXPos != NULL) {
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(*pSlider->pfuncXPos)((void*)(pGui),(void*)(pElemRef),nPos);
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}
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// Mark for redraw
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// - Only need incremental redraw
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gslc_ElemSetRedraw(pGui,pElemRef,GSLC_REDRAW_INC);
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}
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}
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// Assign the position callback function for a slider
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void gslc_ElemXSliderSetPosFunc(gslc_tsGui* pGui,gslc_tsElemRef* pElemRef,GSLC_CB_XSLIDER_POS funcCb)
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{
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if ((pElemRef == NULL) || (funcCb == NULL)) {
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static const char GSLC_PMEM FUNCSTR[] = "ElemXSliderSetPosFunc";
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GSLC_DEBUG2_PRINT_CONST(ERRSTR_NULL,FUNCSTR);
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return;
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}
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gslc_tsElem* pElem = gslc_GetElemFromRef(pGui,pElemRef);
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gslc_tsXSlider* pSlider = (gslc_tsXSlider*)(pElem->pXData);
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pSlider->pfuncXPos = funcCb;
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}
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// Redraw the slider
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// - Note that this redraw is for the entire element rect region
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// - The Draw function parameters use void pointers to allow for
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// simpler callback function definition & scalability.
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bool gslc_ElemXSliderDraw(void* pvGui,void* pvElemRef,gslc_teRedrawType eRedraw)
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{
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if ((pvGui == NULL) || (pvElemRef == NULL)) {
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static const char GSLC_PMEM FUNCSTR[] = "ElemXSliderDraw";
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GSLC_DEBUG2_PRINT_CONST(ERRSTR_NULL,FUNCSTR);
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return false;
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}
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// Typecast the parameters to match the GUI and element types
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gslc_tsGui* pGui = (gslc_tsGui*)(pvGui);
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gslc_tsElemRef* pElemRef = (gslc_tsElemRef*)(pvElemRef);
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gslc_tsElem* pElem = gslc_GetElemFromRef(pGui,pElemRef);
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// Fetch the element's extended data structure
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gslc_tsXSlider* pSlider;
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pSlider = (gslc_tsXSlider*)(pElem->pXData);
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if (pSlider == NULL) {
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GSLC_DEBUG2_PRINT("ERROR: ElemXSliderDraw(%s) pXData is NULL\n","");
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return false;
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}
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bool bGlow = (pElem->nFeatures & GSLC_ELEM_FEA_GLOW_EN) && gslc_ElemGetGlow(pGui,pElemRef);
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int16_t nPos = pSlider->nPos;
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int16_t nPosMin = pSlider->nPosMin;
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int16_t nPosMax = pSlider->nPosMax;
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bool bVert = pSlider->bVert;
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int16_t nThumbSz = pSlider->nThumbSz;
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bool bTrim = pSlider->bTrim;
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gslc_tsColor colTrim = pSlider->colTrim;
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uint16_t nTickDiv = pSlider->nTickDiv;
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int16_t nTickLen = pSlider->nTickLen;
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gslc_tsColor colTick = pSlider->colTick;
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// Range check on nPos
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if (nPos < nPosMin) { nPos = nPosMin; }
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else if (nPos > nPosMax) { nPos = nPosMax; }
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int16_t nX0,nY0,nX1,nY1,nXMid,nYMid;
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nX0 = pElem->rElem.x;
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nY0 = pElem->rElem.y;
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nX1 = pElem->rElem.x + pElem->rElem.w - 1;
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nY1 = pElem->rElem.y + pElem->rElem.h - 1;
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nXMid = (nX0+nX1)/2;
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nYMid = (nY0+nY1)/2;
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// Scale the current position
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int16_t nPosRng = nPosMax-nPosMin;
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// TODO: Check for nPosRng=0, reversed min/max
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int16_t nPosOffset = nPos-nPosMin;
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// Provide some margin so thumb doesn't exceed control bounds
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// TODO: Handle nCtrlRng <= 0
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int16_t nMargin = nThumbSz;
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int16_t nCtrlRng;
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if (!bVert) {
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nCtrlRng = (nX1-nMargin)-(nX0+nMargin);
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} else {
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nCtrlRng = (nY1-nMargin)-(nY0+nMargin);
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}
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int16_t nCtrlPos = (int16_t)((int32_t)nPosOffset * (int32_t)nCtrlRng / (int32_t)nPosRng) + nMargin;
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// Draw the background
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// - TODO: To reduce flicker on unbuffered displays, one could consider
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// redrawing only the thumb (last drawn position) with fill and
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// then redraw other portions. This would prevent the
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// track / ticks from flickering needlessly. A full redraw would
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// be required if it was first draw action.
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gslc_DrawFillRect(pGui,pElem->rElem,(bGlow)?pElem->colElemFillGlow:pElem->colElemFill);
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// Draw any ticks
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// - Need at least one tick segment
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if (nTickDiv>=1) {
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uint16_t nTickInd;
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int16_t nTickOffset;
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for (nTickInd=0;nTickInd<=nTickDiv;++nTickInd) {
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nTickOffset = (int16_t)((int32_t)nTickInd * (int32_t)nCtrlRng / (int32_t)nTickDiv);
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if (!bVert) {
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gslc_DrawLine(pGui,nX0+nMargin+ nTickOffset,nYMid,
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nX0+nMargin + nTickOffset,nYMid+nTickLen,colTick);
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} else {
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gslc_DrawLine(pGui,nXMid,nY0+nMargin+ nTickOffset,
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nXMid+nTickLen,nY0+nMargin + nTickOffset,colTick);
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}
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}
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}
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// Draw the track
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if (!bVert) {
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// Make the track highlight during glow
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gslc_DrawLine(pGui,nX0+nMargin,nYMid,nX1-nMargin,nYMid,
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bGlow? pElem->colElemFrameGlow : pElem->colElemFrame);
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// Optionally draw a trim line
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if (bTrim) {
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gslc_DrawLine(pGui,nX0+nMargin,nYMid+1,nX1-nMargin,nYMid+1,colTrim);
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}
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} else {
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// Make the track highlight during glow
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gslc_DrawLine(pGui,nXMid,nY0+nMargin,nXMid,nY1-nMargin,
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bGlow? pElem->colElemFrameGlow : pElem->colElemFrame);
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// Optionally draw a trim line
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if (bTrim) {
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gslc_DrawLine(pGui,nXMid+1,nY0+nMargin,nXMid+1,nY1-nMargin,colTrim);
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}
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}
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int16_t nCtrlX0,nCtrlY0;
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gslc_tsRect rThumb;
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if (!bVert) {
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nCtrlX0 = nX0+nCtrlPos-nThumbSz;
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nCtrlY0 = nYMid-nThumbSz;
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} else {
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nCtrlX0 = nXMid-nThumbSz;
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nCtrlY0 = nY0+nCtrlPos-nThumbSz;
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}
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rThumb.x = nCtrlX0;
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rThumb.y = nCtrlY0;
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rThumb.w = 2*nThumbSz;
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rThumb.h = 2*nThumbSz;
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// Draw the thumb control
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gslc_DrawFillRect(pGui,rThumb,(bGlow)?pElem->colElemFillGlow:pElem->colElemFill);
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gslc_DrawFrameRect(pGui,rThumb,(bGlow)?pElem->colElemFrameGlow:pElem->colElemFrame);
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if (bTrim) {
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gslc_tsRect rThumbTrim;
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rThumbTrim = gslc_ExpandRect(rThumb,-1,-1);
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gslc_DrawFrameRect(pGui,rThumbTrim,pSlider->colTrim);
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}
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// Clear the redraw flag
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gslc_ElemSetRedraw(pGui,pElemRef,GSLC_REDRAW_NONE);
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// Mark page as needing flip
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gslc_PageFlipSet(pGui,true);
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return true;
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}
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// This callback function is called by gslc_ElemSendEventTouch()
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// after any touch event
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bool gslc_ElemXSliderTouch(void* pvGui,void* pvElemRef,gslc_teTouch eTouch,int16_t nRelX,int16_t nRelY)
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{
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#if defined(DRV_TOUCH_NONE)
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return false;
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#else
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if ((pvGui == NULL) || (pvElemRef == NULL)) {
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static const char GSLC_PMEM FUNCSTR[] = "ElemXSliderTouch";
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GSLC_DEBUG2_PRINT_CONST(ERRSTR_NULL,FUNCSTR);
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return false;
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}
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gslc_tsGui* pGui = NULL;
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gslc_tsElemRef* pElemRef = NULL;
|
||
|
gslc_tsElem* pElem = NULL;
|
||
|
gslc_tsXSlider* pSlider = NULL;
|
||
|
|
||
|
// Typecast the parameters to match the GUI
|
||
|
pGui = (gslc_tsGui*)(pvGui);
|
||
|
pElemRef = (gslc_tsElemRef*)(pvElemRef);
|
||
|
pElem = gslc_GetElemFromRef(pGui,pElemRef);
|
||
|
pSlider = (gslc_tsXSlider*)(pElem->pXData);
|
||
|
|
||
|
bool bGlowingOld = gslc_ElemGetGlow(pGui,pElemRef);
|
||
|
int16_t nPosRng;
|
||
|
int16_t nPos = 0;
|
||
|
bool bUpdatePos = false;
|
||
|
bool bIndexed = false;
|
||
|
|
||
|
switch(eTouch) {
|
||
|
|
||
|
case GSLC_TOUCH_DOWN_IN:
|
||
|
// Start glowing as must be over it
|
||
|
gslc_ElemSetGlow(pGui,pElemRef,true);
|
||
|
bUpdatePos = true;
|
||
|
break;
|
||
|
|
||
|
case GSLC_TOUCH_MOVE_IN:
|
||
|
gslc_ElemSetGlow(pGui,pElemRef,true);
|
||
|
bUpdatePos = true;
|
||
|
break;
|
||
|
case GSLC_TOUCH_MOVE_OUT:
|
||
|
gslc_ElemSetGlow(pGui,pElemRef,false);
|
||
|
bUpdatePos = true;
|
||
|
break;
|
||
|
|
||
|
case GSLC_TOUCH_UP_IN:
|
||
|
// End glow
|
||
|
gslc_ElemSetGlow(pGui,pElemRef,false);
|
||
|
break;
|
||
|
case GSLC_TOUCH_UP_OUT:
|
||
|
// End glow
|
||
|
gslc_ElemSetGlow(pGui,pElemRef,false);
|
||
|
break;
|
||
|
|
||
|
case GSLC_TOUCH_SET_REL:
|
||
|
case GSLC_TOUCH_SET_ABS:
|
||
|
bIndexed = true;
|
||
|
gslc_ElemSetGlow(pGui,pElemRef,true);
|
||
|
bUpdatePos = true;
|
||
|
break;
|
||
|
|
||
|
default:
|
||
|
return false;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
|
||
|
// If we need to update the slider position, calculate the value
|
||
|
// and perform the update
|
||
|
if (bUpdatePos) {
|
||
|
|
||
|
if (bIndexed) {
|
||
|
// The position is changed by direct control (eg. keyboard)
|
||
|
// instead of touch coordinates
|
||
|
|
||
|
// FIXME: Change the following to be either absolute or relative
|
||
|
// value assignment instead of inc/dec. Then the user code can
|
||
|
// define what the magnitude and direction should be.
|
||
|
|
||
|
if (eTouch == GSLC_TOUCH_SET_REL) {
|
||
|
// Overload the "nRelY" parameter
|
||
|
nPos = pSlider->nPos;
|
||
|
nPos += nRelY;
|
||
|
nPos = (nPos > pSlider->nPosMax)? pSlider->nPosMax : nPos;
|
||
|
nPos = (nPos < pSlider->nPosMin)? pSlider->nPosMin : nPos;
|
||
|
} else if (eTouch == GSLC_TOUCH_SET_ABS) {
|
||
|
// Overload the "nRelY" parameter
|
||
|
nPos = nRelY;
|
||
|
nPos = (nPos > pSlider->nPosMax)? pSlider->nPosMax : nPos;
|
||
|
nPos = (nPos < pSlider->nPosMin)? pSlider->nPosMin : nPos;
|
||
|
}
|
||
|
} else {
|
||
|
// Perform additional range checking
|
||
|
nRelX = (nRelX < 0)? 0 : nRelX;
|
||
|
nRelY = (nRelY < 0)? 0 : nRelY;
|
||
|
|
||
|
// Calc new position
|
||
|
nPosRng = pSlider->nPosMax - pSlider->nPosMin;
|
||
|
if (!pSlider->bVert) {
|
||
|
nPos = (int16_t)((int32_t)nRelX * (int32_t)nPosRng / (int32_t)pElem->rElem.w) + pSlider->nPosMin;
|
||
|
} else {
|
||
|
nPos = (int16_t)((int32_t)nRelY * (int32_t)nPosRng / (int32_t)pElem->rElem.h) + pSlider->nPosMin;
|
||
|
}
|
||
|
}
|
||
|
// Update the slider
|
||
|
gslc_ElemXSliderSetPos(pGui,pElemRef,nPos);
|
||
|
}
|
||
|
|
||
|
// If the slider changed state, redraw
|
||
|
if (gslc_ElemGetGlow(pGui,pElemRef) != bGlowingOld) {
|
||
|
gslc_ElemSetRedraw(pGui,pElemRef,GSLC_REDRAW_FULL);
|
||
|
}
|
||
|
|
||
|
return true;
|
||
|
#endif // !DRV_TOUCH_NONE
|
||
|
}
|
||
|
|
||
|
// ============================================================================
|