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ELDisplay.cpp
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ELDisplay.cpp
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/*
Author: Brent Pease (embeddedlibraryfeedback@gmail.com)
The MIT License (MIT)
Copyright (c) 2015-FOREVER Brent Pease
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
Parts based on AdaFruit ILI9341 library:
This is our library for the Adafruit ILI9341 Breakout and Shield
----> http://www.adafruit.com/products/1651
Check out the links above for our tutorials and wiring diagrams
These displays use SPI to communicate, 4 or 5 pins are required to
interface (RST is optional)
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Limor Fried/Ladyada for Adafruit Industries.
MIT license, all text above must be included in any redistribution
*/
#include "ELDisplay.h"
#include "ELAssert.h"
#include "ELModule.h"
CModule_Display* gDisplayModule;
SDisplayColor gColorWhite(255, 255, 255);
SDisplayColor gColorBlack(0, 0, 0);
SDisplayColor gColorRed(255, 0, 0);
SDisplayColor gColorGreen(0, 255, 0);
SDisplayColor gColorBlue(0, 0, 255);
#ifdef WIN32
#include "ELDisplay_ILI9341Win.h"
#else
#include "ELDisplay_ILI9341.h"
#endif
MModuleImplementation_Start(
CDisplayDriver_ILI9341,
EDisplayOrientation inDisplayOrientation,
uint8_t inCS,
uint8_t inDC,
uint8_t inMOSI,
uint8_t inClk,
uint8_t inMISO)
MModuleImplementation_Finish(CDisplayDriver_ILI9341, inDisplayOrientation, inCS, inDC, inMOSI, inClk, inMISO)
SPlacement
SPlacement::Outside(
uint8_t inSide,
uint8_t inAlignment)
{
return SPlacement(ePlacementType_Outside, inSide, inAlignment);
}
SPlacement
SPlacement::Inside(
uint8_t inHoriz,
uint8_t inVert)
{
return SPlacement(ePlacementType_Inside, inHoriz, inVert);
}
ITouchDriver*
CreateXPT2046Driver(
uint8_t inChipselect)
{
static ITouchDriver* touchDriver = NULL;
if(touchDriver == NULL)
{
touchDriver = new ITouchDriver_XPT2046(inChipselect);
}
return touchDriver;
}
static uint32_t fetchbit(const uint8_t *p, uint32_t index)
{
if (p[index >> 3] & (1 << (7 - (index & 7)))) return 1;
return 0;
}
static uint32_t fetchbits_unsigned(const uint8_t *p, uint32_t index, uint32_t required)
{
uint32_t val = 0;
do {
uint8_t b = p[index >> 3];
uint32_t avail = 8 - (index & 7);
if (avail <= required) {
val <<= avail;
val |= b & ((1 << avail) - 1);
index += avail;
required -= avail;
} else {
b >>= avail - required;
val <<= required;
val |= b & ((1 << required) - 1);
break;
}
} while (required);
return val;
}
static uint32_t fetchbits_signed(const uint8_t *p, uint32_t index, uint32_t required)
{
uint32_t val = fetchbits_unsigned(p, index, required);
if (val & (1 << (required - 1))) {
return (int32_t)val - (1 << required);
}
return (int32_t)val;
}
CDisplayRegion::CDisplayRegion(
CDisplayRegion* inParent,
SPlacement inPlacement)
:
parent(NULL),
firstChild(NULL),
nextChild(NULL),
placement(inPlacement),
curRect(0, 0, 0, 0),
oldRect(0, 0, 0, 0),
borderLeft(0),
borderRight(0),
borderTop(0),
borderBottom(0)
{
touchObject = NULL;
if(inParent != NULL)
{
AddToParent(inParent);
}
}
int16_t
CDisplayRegion::GetWidth(
void)
{
return curRect.GetWidth();;
}
int16_t
CDisplayRegion::GetHeight(
void)
{
return curRect.GetHeight();
}
void
CDisplayRegion::AddToParent(
CDisplayRegion* inParent)
{
MReturnOnError(parent != NULL);
parent = inParent;
nextChild = inParent->firstChild;
inParent->firstChild = this;
}
void
CDisplayRegion::RemoveFromParent(
void)
{
MReturnOnError(parent == NULL);
CDisplayRegion* prevRegion = NULL;
CDisplayRegion* curRegion = parent->firstChild;
while(curRegion != NULL)
{
if(curRegion == this)
{
break;
}
prevRegion = curRegion;
curRegion = curRegion->nextChild;
}
if(prevRegion == NULL)
{
MAssert(parent->firstChild != NULL);
parent->firstChild = parent->firstChild->nextChild;
}
else
{
prevRegion->nextChild = nextChild;
}
parent = NULL;
}
void
CDisplayRegion::SetPlacement(
SPlacement inPlacement)
{
placement = inPlacement;
}
void
CDisplayRegion::SetBorder(
int8_t inLeft,
int8_t inRight,
int8_t inTop,
int8_t inBottom)
{
borderLeft = inLeft;
borderRight = inRight;
borderTop = inTop;
borderBottom = inBottom;
}
void
CDisplayRegion::SetTouchHandler(
ITouchHandler* inHandler,
TTouchHandlerMethod inMethod,
void* inRefCon)
{
touchObject = inHandler;
touchMethod = inMethod;
touchRefCon = inRefCon;
}
void
CDisplayRegion::ProcessTouch(
ETouchEvent inTouchEvent,
SDisplayPoint const& inTouchLoc)
{
if((curRect && inTouchLoc) && touchObject != NULL)
{
(touchObject->*touchMethod)(inTouchEvent, inTouchLoc, touchRefCon);
}
// Children can be outside of the bounds so recurse on all children regardless of the point being contained in the parent
CDisplayRegion* curRegion = firstChild;
while(curRegion != NULL)
{
curRegion->ProcessTouch(inTouchEvent, inTouchLoc);
curRegion = curRegion->nextChild;
}
}
void
CDisplayRegion::StartUpdate(
void)
{
oldRect = curRect;
curRect.Clear();
if(parent == NULL)
{
curRect.bottomRight.x = gDisplayModule->GetWidth();
curRect.bottomRight.y = gDisplayModule->GetHeight();
}
CDisplayRegion* curRegion = firstChild;
while(curRegion != NULL)
{
curRegion->StartUpdate();
curRegion = curRegion->nextChild;
}
}
void
CDisplayRegion::UpdateDimensions(
void)
{
if(firstChild != NULL)
{
CDisplayRegion* curRegion = firstChild;
// update all of the children
while(curRegion != NULL)
{
curRegion->UpdateDimensions();
curRegion = curRegion->nextChild;
}
int16_t curWidth;
int16_t curHeight;
if(placement.GetPlacementType() == ePlacementType_Outside || placement.GetInsideHoriz() != eAlign_Horiz_Expand)
{
int16_t maxWidth = 0;
SumRegionList(curWidth, curHeight, SPlacement::Inside(ePlacement_Any, eAlign_Vert_Top), firstChild);
if(curWidth > maxWidth)
{
maxWidth = curWidth;
}
SumRegionList(curWidth, curHeight, SPlacement::Inside(ePlacement_Any, eAlign_Vert_Center), firstChild);
if(curWidth > maxWidth)
{
maxWidth = curWidth;
}
SumRegionList(curWidth, curHeight, SPlacement::Inside(ePlacement_Any, eAlign_Vert_Bottom), firstChild);
if(curWidth > maxWidth)
{
maxWidth = curWidth;
}
curRect.bottomRight.x = maxWidth + borderLeft + borderRight;
}
if(placement.GetPlacementType() == ePlacementType_Outside || placement.GetInsideVert() != eAlign_Vert_Expand)
{
int16_t maxHeight = 0;
SumRegionList(curWidth, curHeight, SPlacement::Inside(eAlign_Horiz_Left, ePlacement_Any), firstChild);
if(curHeight > maxHeight)
{
maxHeight = curHeight;
}
SumRegionList(curWidth, curHeight, SPlacement::Inside(eAlign_Horiz_Center, ePlacement_Any), firstChild);
if(curHeight > maxHeight)
{
maxHeight = curHeight;
}
SumRegionList(curWidth, curHeight, SPlacement::Inside(eAlign_Horiz_Right, ePlacement_Any), firstChild);
if(curHeight > maxHeight)
{
maxHeight = curHeight;
}
curRect.bottomRight.y = maxHeight + borderTop + borderBottom;
}
}
}
void
CDisplayRegion::UpdateOrigins(
void)
{
CDisplayRegion* curRegion = firstChild;
while(curRegion != NULL)
{
curRegion->PlaceInRect(borderLeft, borderTop, borderRight, borderBottom, curRect);
curRegion->UpdateOrigins();
curRegion = curRegion->nextChild;
}
}
void
CDisplayRegion::PlaceInRect(
int8_t inBorderLeft,
int8_t inBorderTop,
int8_t inBorderRight,
int8_t inBorderBottom,
SDisplayRect const& inRect)
{
int16_t offset;
if(placement.GetPlacementType() == ePlacementType_Inside)
{
switch(placement.GetInsideHoriz())
{
case eAlign_Horiz_Left:
offset = inRect.topLeft.x + inBorderLeft;
curRect.topLeft.x += offset;
curRect.bottomRight.x += offset;
break;
case eAlign_Horiz_Center:
offset = inRect.topLeft.x + inBorderLeft + ((inRect.GetWidth() - inBorderLeft - inBorderRight - curRect.GetWidth()) >> 1);
curRect.topLeft.x += offset;
curRect.bottomRight.x += offset;
break;
case eAlign_Horiz_Right:
offset = inRect.bottomRight.x - inBorderRight - curRect.GetWidth();
curRect.topLeft.x += offset;
curRect.bottomRight.x += offset;
break;
case eAlign_Horiz_Expand:
curRect.topLeft.x = inRect.topLeft.x + inBorderLeft;
curRect.bottomRight.x = inRect.bottomRight.x - inBorderRight;
break;
}
switch(placement.GetInsideVert())
{
case eAlign_Vert_Top:
offset = inRect.topLeft.y + inBorderTop;
curRect.topLeft.y += offset;
curRect.bottomRight.y += offset;
break;
case eAlign_Vert_Center:
offset = inRect.topLeft.y + inBorderTop + ((inRect.GetHeight() - inBorderTop - inBorderBottom - curRect.GetHeight()) >> 1);
curRect.topLeft.y += offset;
curRect.bottomRight.y += offset;
break;
case eAlign_Vert_Bottom:
offset = inRect.bottomRight.y - inBorderBottom - curRect.GetHeight();
curRect.topLeft.y += offset;
curRect.bottomRight.y += offset;
break;
case eAlign_Vert_Expand:
curRect.topLeft.y = inRect.topLeft.y + inBorderTop;
curRect.bottomRight.y = inRect.bottomRight.y - inBorderBottom;
break;
}
}
else
{
switch(placement.GetOutsideSide())
{
case eAlign_Side_Top:
case eAlign_Side_Bottom:
if(placement.GetOutsideSide() == eAlign_Side_Top)
{
offset = inRect.topLeft.y - curRect.GetHeight();
}
else
{
offset = inRect.bottomRight.y;
}
curRect.topLeft.y += offset;
curRect.bottomRight.y += offset;
switch(placement.GetOutsideAlign())
{
case eAlign_Horiz_Left:
offset = inRect.topLeft.x;
curRect.topLeft.x += offset;
curRect.bottomRight.x += offset;
break;
case eAlign_Horiz_Center:
offset = inRect.topLeft.x + ((inRect.GetWidth() - curRect.GetWidth()) >> 1);
curRect.topLeft.x += offset;
curRect.bottomRight.x += offset;
break;
case eAlign_Horiz_Right:
offset = inRect.bottomRight.x - curRect.GetWidth();
curRect.topLeft.x += offset;
curRect.bottomRight.x += offset;
break;
case eAlign_Horiz_Expand:
curRect.topLeft.x = inRect.topLeft.x;
curRect.bottomRight.x = inRect.bottomRight.x;
break;
}
break;
case eAlign_Side_Left:
case eAlign_Side_Right:
if(placement.GetOutsideSide() == eAlign_Side_Left)
{
offset = inRect.topLeft.x - curRect.GetWidth();
}
else
{
offset = inRect.bottomRight.x;
}
curRect.topLeft.x += offset;
curRect.bottomRight.x += offset;
switch(placement.GetOutsideAlign())
{
case eAlign_Vert_Top:
offset = inRect.topLeft.y;
curRect.topLeft.y += offset;
curRect.bottomRight.y += offset;
break;
case eAlign_Vert_Center:
offset = inRect.topLeft.y + ((inRect.GetHeight() - curRect.GetHeight()) >> 1);
curRect.topLeft.y += offset;
curRect.bottomRight.y += offset;
break;
case eAlign_Vert_Bottom:
offset = inRect.bottomRight.y - curRect.GetHeight();
curRect.topLeft.y += offset;
curRect.bottomRight.y += offset;
break;
case eAlign_Vert_Expand:
curRect.topLeft.y = inRect.topLeft.y;
curRect.bottomRight.y = inRect.bottomRight.y;
break;
}
break;
}
}
}
void
CDisplayRegion::EraseOldRegions(
void)
{
gDisplayModule->FillRectDiff(curRect, oldRect, SDisplayColor(0, 0, 0));
if(borderRight > 0)
{
//gDisplayModule->FillRect(
}
CDisplayRegion* curRegion = firstChild;
while(curRegion != NULL)
{
curRegion->EraseOldRegions();
curRegion = curRegion->nextChild;
}
}
void
CDisplayRegion::Draw(
void)
{
CDisplayRegion* curRegion = firstChild;
// update all of the children
while(curRegion != NULL)
{
// Draw this region
curRegion->Draw();
// Advance to next child
curRegion = curRegion->nextChild;
}
#if 0
if(parent != NULL)
{
gDisplayModule->GetDisplayDriver()->DrawRect(curRect, SDisplayColor(255, 255, 255));
}
#endif
}
void
CDisplayRegion::SumRegionList(
int16_t& outWidth,
int16_t& outHeight,
SPlacement inPlacement,
CDisplayRegion* inList)
{
outWidth = 0;
outHeight = 0;
CDisplayRegion* curRegion = firstChild;
while(curRegion != NULL)
{
if(curRegion->placement.Match(inPlacement))
{
outWidth += curRegion->curRect.GetWidth();
outHeight += curRegion->GetHeight();
}
curRegion = curRegion->nextChild;
}
}
CDisplayRegion_Grid::CDisplayRegion_Grid(
CDisplayRegion* inParent,
SPlacement inPlacement,
bool inEqualCellDimensions,
uint8_t inNumRows,
uint8_t inNumCols)
:
CDisplayRegion(inParent, inPlacement),
equalCellPlacement(inEqualCellDimensions),
numRows(inNumRows),
numCols(inNumCols)
{
cellMatrix = (CDisplayRegion**)malloc(numRows * numCols * sizeof(CDisplayRegion*));
MAssert(cellMatrix != NULL);
memset(cellMatrix, 0, numRows * numCols * sizeof(CDisplayRegion*));
rowOffsets = (int16_t*)malloc((numRows + 1) * sizeof(int16_t));
MAssert(rowOffsets != NULL);
colOffsets = (int16_t*)malloc((numCols + 1) * sizeof(int16_t));
MAssert(colOffsets != NULL);
}
void
CDisplayRegion_Grid::SetCellRegion(
uint8_t inRow,
uint8_t inCol,
CDisplayRegion* inDisplayRegion)
{
MAssert(inRow < numRows && inCol < numCols);
cellMatrix[inRow * numCols + inCol] = inDisplayRegion;
}
void
CDisplayRegion_Grid::UpdateDimensions(
void)
{
CDisplayRegion* curRegion = firstChild;
while(curRegion != NULL)
{
curRegion->UpdateDimensions();
curRegion = curRegion->nextChild;
}
memset(rowOffsets, 0, (numRows + 1) * sizeof(int16_t));
memset(colOffsets, 0, (numCols + 1) * sizeof(int16_t));
for(uint8_t y = 0; y < numRows; ++y)
{
for(uint8_t x = 0; x < numCols; ++x)
{
CDisplayRegion* curRegion = cellMatrix[y * numCols + x];
if(curRegion != NULL)
{
int16_t curRegionWidth = curRegion->curRect.GetWidth();
int16_t curRegionHeight = curRegion->curRect.GetHeight();
if(curRegionWidth > colOffsets[x])
{
colOffsets[x] = curRegionWidth;
}
if(curRegionHeight > rowOffsets[y])
{
rowOffsets[y] = curRegionHeight;
}
}
}
}
int16_t gridHeightTotal = 0;
int16_t gridWidthTotal = 0;
for(int i = 0; i < numCols; ++i)
{
int16_t curWidth = colOffsets[i];
colOffsets[i] = gridWidthTotal;
gridWidthTotal += curWidth;
}
colOffsets[numCols] = gridWidthTotal;
for(int i = 0; i < numRows; ++i)
{
int16_t curHeight = rowOffsets[i];
rowOffsets[i] = gridHeightTotal;
gridHeightTotal += curHeight;
}
rowOffsets[numRows] = gridHeightTotal;
curRect.bottomRight.x = gridWidthTotal + borderLeft + borderRight;
curRect.bottomRight.y = gridHeightTotal + borderTop + borderBottom;
}
void
CDisplayRegion_Grid::UpdateOrigins(
void)
{
CDisplayRegion* curRegion;
if(equalCellPlacement)
{
int16_t gridWidth = curRect.GetWidth() - borderLeft - borderRight;
int16_t gridHeight = curRect.GetHeight() - borderTop - borderBottom;
for(uint8_t x = 0; x <= numCols; ++x)
{
colOffsets[x] = x * gridWidth / numCols;
}
for(uint8_t y = 0; y <= numRows; ++y)
{
rowOffsets[y] = y * gridHeight / numRows;
}
}
int16_t gridLeft = curRect.topLeft.x + borderLeft;
int16_t gridTop = curRect.topLeft.y + borderTop;
for(uint8_t y = 0; y < numRows; ++y)
{
for(uint8_t x = 0; x < numCols; ++x)
{
curRegion = cellMatrix[y * numCols + x];
if(curRegion != NULL)
{
SDisplayRect rect(SDisplayPoint(gridLeft + colOffsets[x], gridTop + rowOffsets[y]), SDisplayPoint(gridLeft + colOffsets[x + 1], gridTop + rowOffsets[y + 1]));
curRegion->PlaceInRect(0, 0, 0, 0, rect);
}
}
}
curRegion = firstChild;
while(curRegion != NULL)
{
curRegion->UpdateOrigins();
curRegion = curRegion->nextChild;
}
}
CDisplayRegion_Text::CDisplayRegion_Text(
CDisplayRegion* inParent,
SPlacement inPlacement,
SDisplayColor inFGColor,
SDisplayColor inBGColor,
SFontData const& inFont,
char const* inFormat,
...)
:
CDisplayRegion(inParent, inPlacement),
text(NULL),
fgColor(inFGColor),
bgColor(inBGColor),
font(&inFont)
{
char buffer[256];
va_list varArgs;
va_start(varArgs, inFormat);
vsnprintf(buffer, sizeof(buffer) - 1, inFormat, varArgs);
buffer[sizeof(buffer) - 1] = 0; // Ensure valid string
va_end(varArgs);
size_t newStrLen = strlen(buffer);
text = gDisplayModule->ReallocString(text, newStrLen + 1);
MReturnOnError(text == NULL);
strcpy(text, buffer);
horizAlign = eAlign_Horiz_Left;
vertAlign = eAlign_Vert_Top;
}
CDisplayRegion_Text::~CDisplayRegion_Text(
)
{
if(text != NULL)
{
gDisplayModule->FreeString(text);
}
}
void
CDisplayRegion_Text::printf(
char const* inFormat,
...)
{
char buffer[256];
va_list varArgs;
va_start(varArgs, inFormat);
vsnprintf(buffer, sizeof(buffer) - 1, inFormat, varArgs);
buffer[sizeof(buffer) - 1] = 0; // Ensure valid string
va_end(varArgs);
size_t newStrLen = strlen(buffer);
text = gDisplayModule->ReallocString(text, newStrLen + 1);
MReturnOnError(text == NULL);
strcpy(text, buffer);
}
void
CDisplayRegion_Text::SetTextFont(
SFontData const& inFont)
{
font = &inFont;
}
void
CDisplayRegion_Text::SetTextColor(
SDisplayColor const& inFGColor,
SDisplayColor const& inBGColor)
{
fgColor = inFGColor;
bgColor = inBGColor;
}
void
CDisplayRegion_Text::SetTextAlignment(
uint8_t inHorizAlignment,
uint8_t inVertAlignment)
{
horizAlign = inHorizAlignment;
vertAlign = inVertAlignment;
}
void
CDisplayRegion_Text::Draw(
void)
{
gDisplayModule->DrawText(text, SDisplayRect(SDisplayPoint(curRect.topLeft.x + borderLeft, curRect.topLeft.y + borderTop), SDisplayPoint(curRect.bottomRight.x - borderRight, curRect.bottomRight.y - borderBottom)), font, fgColor, bgColor);
CDisplayRegion::Draw();
}
void
CDisplayRegion_Text::UpdateDimensions(
void)
{
if(text != NULL && font != NULL)
{
curRect.bottomRight = gDisplayModule->GetTextDimensions(text, font);
curRect.bottomRight.x += borderLeft + borderRight;
curRect.bottomRight.y += borderTop + borderBottom;
}
CDisplayRegion* curRegion = firstChild;
// update all of the children
while(curRegion != NULL)
{
curRegion->UpdateDimensions();
curRegion = curRegion->nextChild;
}
}
MModuleImplementation_Start(
CModule_Display)
MModuleImplementation_FinishGlobal(CModule_Display, gDisplayModule)
CModule_Display::CModule_Display(
)
:
CModule(0, 0, NULL, 20000)
{
displayDriver = NULL;
touchDriver = NULL;
touchDown = false;
topRegion = NULL;
memset(stringTable, 0xFF, sizeof(stringTable));
}
void
CModule_Display::Configure(
IDisplayDriver* inDisplayDriver,
ITouchDriver* inTouchDriver)
{
displayDriver = inDisplayDriver;
touchDriver = inTouchDriver;
topRegion = new CDisplayRegion(NULL, SPlacement::Inside(eAlign_Horiz_Expand, eAlign_Vert_Expand));
}
void
CModule_Display::Update(
uint32_t inDeltaTimeUS)
{
if(touchDriver != NULL)
{
bool curTouchDown;
curTouchDown = touchDriver->GetTouch(touchLoc);
if(curTouchDown != touchDown)
{
if(curTouchDown)
{
if(topRegion != NULL)
{
topRegion->ProcessTouch(eTouchEvent_Down, touchLoc);
}
touchDown = true;
}
else if(touchDown)
{
if(topRegion != NULL)
{
topRegion->ProcessTouch(eTouchEvent_Up, touchLoc);
}
touchDown = false;
}
}
}
}
int16_t
CModule_Display::GetWidth(
void)
{
if(displayDriver != NULL)
{
return displayDriver->GetWidth();
}
return 0;
}
int16_t
CModule_Display::GetHeight(
void)
{
if(displayDriver != NULL)
{
return displayDriver->GetHeight();
}
return 0;
}
IDisplayDriver*
CModule_Display::GetDisplayDriver(
void)
{
return displayDriver;
}
CDisplayRegion*
CModule_Display::GetTopDisplayRegion(
void)
{
MReturnOnError(topRegion == NULL, NULL);
return topRegion;
}
SDisplayPoint
CModule_Display::GetTextDimensions(
char const* inStr,
SFontData const* inFont)
{
SDisplayPoint result(0, 0);
uint32_t bitoffset;
const uint8_t* data;
for(;;)
{
unsigned char c = *inStr++;
if(c == 0)
{
break;
}
if (c >= inFont->index1_first && c <= inFont->index1_last)
{
bitoffset = c - inFont->index1_first;
bitoffset *= inFont->bits_index;
}
else if (c >= inFont->index2_first && c <= inFont->index2_last)
{
bitoffset = c - inFont->index2_first + inFont->index1_last - inFont->index1_first + 1;
bitoffset *= inFont->bits_index;
}
else
{
return result;
}
uint32_t index = fetchbits_unsigned(inFont->index, bitoffset, inFont->bits_index);
//Serial.printf(" index = %d\n", index);
data = inFont->data + index;
uint32_t encoding = fetchbits_unsigned(data, 0, 3);
if (encoding != 0)
{
return result;
}
int16_t width = (int16_t)fetchbits_unsigned(data, 3, inFont->bits_width);
bitoffset = inFont->bits_width + 3;