From 788db64b8642bf31de6930d18a62177c64163ee0 Mon Sep 17 00:00:00 2001 From: Yuval Adam Date: Fri, 13 Mar 2015 12:24:02 +0200 Subject: Add grlib, fixes #5 --- grlib/checkbox.c | 467 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 467 insertions(+) create mode 100644 grlib/checkbox.c (limited to 'grlib/checkbox.c') diff --git a/grlib/checkbox.c b/grlib/checkbox.c new file mode 100644 index 0000000..17bee3b --- /dev/null +++ b/grlib/checkbox.c @@ -0,0 +1,467 @@ +//***************************************************************************** +// +// checkbox.c - Check box widget. +// +// Copyright (c) 2008-2014 Texas Instruments Incorporated. All rights reserved. +// Software License Agreement +// +// Texas Instruments (TI) is supplying this software for use solely and +// exclusively on TI's microcontroller products. The software is owned by +// TI and/or its suppliers, and is protected under applicable copyright +// laws. You may not combine this software with "viral" open-source +// software in order to form a larger program. +// +// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS. +// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT +// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY +// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL +// DAMAGES, FOR ANY REASON WHATSOEVER. +// +// This is part of revision 2.1.0.12573 of the Tiva Graphics Library. +// +//***************************************************************************** + +#include +#include +#include "driverlib/debug.h" +#include "grlib/grlib.h" +#include "grlib/widget.h" +#include "grlib/checkbox.h" + +//***************************************************************************** +// +//! \addtogroup checkbox_api +//! @{ +// +//***************************************************************************** + +//***************************************************************************** +// +//! Draws a check box widget. +//! +//! \param psWidget is a pointer to the check box widget to be drawn. +//! \param bClick is a boolean that is \b true if the paint request is a result +//! of a pointer click and \b false if not. +//! +//! This function draws a check box widget on the display. This is called in +//! response to a \b #WIDGET_MSG_PAINT message. +//! +//! \return None. +// +//***************************************************************************** +static void +CheckBoxPaint(tWidget *psWidget, bool bClick) +{ + tCheckBoxWidget *pCheck; + tRectangle i16Rect; + tContext sCtx; + int32_t i32Y; + + // + // Check the arguments. + // + ASSERT(psWidget); + + // + // Convert the generic widget pointer into a check box widget pointer. + // + pCheck = (tCheckBoxWidget *)psWidget; + + // + // Initialize a drawing context. + // + GrContextInit(&sCtx, psWidget->psDisplay); + + // + // Initialize the clipping region based on the extents of this check box. + // + GrContextClipRegionSet(&sCtx, &(psWidget->sPosition)); + + // + // See if the check box fill style is selected. + // + if((pCheck->ui16Style & CB_STYLE_FILL) && !bClick) + { + // + // Fill the check box with the fill color. + // + GrContextForegroundSet(&sCtx, pCheck->ui32FillColor); + GrRectFill(&sCtx, &(psWidget->sPosition)); + } + + // + // See if the check box outline style is selected. + // + if((pCheck->ui16Style & CB_STYLE_OUTLINE) && !bClick) + { + // + // Outline the check box with the outline color. + // + GrContextForegroundSet(&sCtx, pCheck->ui32OutlineColor); + GrRectDraw(&sCtx, &(psWidget->sPosition)); + } + + // + // Draw the check box. + // + i16Rect.i16XMin = psWidget->sPosition.i16XMin + 2; + i16Rect.i16YMin = (psWidget->sPosition.i16YMin + + ((psWidget->sPosition.i16YMax - psWidget->sPosition.i16YMin - + pCheck->ui16BoxSize + 1) / 2)); + i16Rect.i16XMax = i16Rect.i16XMin + pCheck->ui16BoxSize - 1; + i16Rect.i16YMax = i16Rect.i16YMin + pCheck->ui16BoxSize - 1; + if(!bClick) + { + GrContextForegroundSet(&sCtx, pCheck->ui32OutlineColor); + GrRectDraw(&sCtx, &i16Rect); + } + + // + // Select the foreground color based on whether or not the check box is + // selected. + // + if(pCheck->ui16Style & CB_STYLE_SELECTED) + { + GrContextForegroundSet(&sCtx, pCheck->ui32OutlineColor); + } + else + { + GrContextForegroundSet(&sCtx, pCheck->ui32FillColor); + } + + // + // Draw an "X" in the check box. + // + GrLineDraw(&sCtx, i16Rect.i16XMin + 1, i16Rect.i16YMin + 1, + i16Rect.i16XMax - 1, i16Rect.i16YMax - 1); + GrLineDraw(&sCtx, i16Rect.i16XMin + 1, i16Rect.i16YMax - 1, + i16Rect.i16XMax - 1, i16Rect.i16YMin + 1); + + // + // See if the check box text or image style is selected. + // + if((pCheck->ui16Style & (CB_STYLE_TEXT | CB_STYLE_IMG)) && !bClick) + { + // + // Shrink the clipping region by the size of the check box so that it + // is not overwritten by further "decorative" portions of the widget. + // + sCtx.sClipRegion.i16XMin += pCheck->ui16BoxSize + 4; + + // + // If the check box outline style is selected then shrink the clipping + // region by one pixel on each side so that the outline is not + // overwritten by the text or image. + // + if(pCheck->ui16Style & CB_STYLE_OUTLINE) + { + sCtx.sClipRegion.i16YMin++; + sCtx.sClipRegion.i16XMax--; + sCtx.sClipRegion.i16YMax--; + } + + // + // See if the check box image style is selected. + // + if(pCheck->ui16Style & CB_STYLE_IMG) + { + // + // Determine where along the Y extent of the widget to draw the + // image. It is drawn at the top if it takes all (or more than + // all) of the Y extent of the widget, and it is drawn centered if + // it takes less than the Y extent. + // + if(GrImageHeightGet(pCheck->pui8Image) > + (sCtx.sClipRegion.i16YMax - sCtx.sClipRegion.i16YMin)) + { + i32Y = sCtx.sClipRegion.i16YMin; + } + else + { + i32Y = (sCtx.sClipRegion.i16YMin + + ((sCtx.sClipRegion.i16YMax - sCtx.sClipRegion.i16YMin - + GrImageHeightGet(pCheck->pui8Image) + 1) / 2)); + } + + // + // Set the foreground and background colors to use for 1 BPP + // images. + // + GrContextForegroundSet(&sCtx, pCheck->ui32TextColor); + GrContextBackgroundSet(&sCtx, pCheck->ui32FillColor); + + // + // Draw the image next to the check box. + // + GrImageDraw(&sCtx, pCheck->pui8Image, sCtx.sClipRegion.i16XMin, + i32Y); + } + + // + // See if the check box text style is selected. + // + if(pCheck->ui16Style & CB_STYLE_TEXT) + { + // + // Determine where along the Y extent of the widget to draw the + // string. It is drawn at the top if it takes all (or more than + // all) of the Y extent of the widget, and it is drawn centered if + // it takes less than the Y extent. + // + if(GrFontHeightGet(pCheck->psFont) > + (sCtx.sClipRegion.i16YMax - sCtx.sClipRegion.i16YMin)) + { + i32Y = sCtx.sClipRegion.i16YMin; + } + else + { + i32Y = (sCtx.sClipRegion.i16YMin + + ((sCtx.sClipRegion.i16YMax - sCtx.sClipRegion.i16YMin - + GrFontHeightGet(pCheck->psFont) + 1) / 2)); + } + + // + // Draw the text next to the check box. + // + GrContextFontSet(&sCtx, pCheck->psFont); + GrContextForegroundSet(&sCtx, pCheck->ui32TextColor); + GrContextBackgroundSet(&sCtx, pCheck->ui32FillColor); + GrStringDraw(&sCtx, pCheck->pcText, -1, sCtx.sClipRegion.i16XMin, + i32Y, pCheck->ui16Style & CB_STYLE_TEXT_OPAQUE); + } + } +} + +//***************************************************************************** +// +//! Handles pointer events for a check box. +//! +//! \param psWidget is a pointer to the check box widget. +//! \param ui32Msg is the pointer event message. +//! \param i32X is the X coordinate of the pointer event. +//! \param i32Y is the Y coordinate of the pointer event. +//! +//! This function processes pointer event messages for a check box. This is +//! called in response to a \b #WIDGET_MSG_PTR_DOWN, \b #WIDGET_MSG_PTR_MOVE, +//! and \b #WIDGET_MSG_PTR_UP messages. +//! +//! If the \b #WIDGET_MSG_PTR_UP message is received with a position within the +//! extents of the check box, the check box's selected state will be toggled +//! and its OnChange function is called. +//! +//! \return Returns 1 if the coordinates are within the extents of the check +//! box and 0 otherwise. +// +//***************************************************************************** +static int32_t +CheckBoxClick(tWidget *psWidget, uint32_t ui32Msg, int32_t i32X, int32_t i32Y) +{ + tCheckBoxWidget *pCheck; + + // + // Check the arguments. + // + ASSERT(psWidget); + + // + // Convert the generic widget pointer into a check box widget pointer. + // + pCheck = (tCheckBoxWidget *)psWidget; + + // + // See if the given coordinates are within the extents of the check box. + // + if((i32X >= psWidget->sPosition.i16XMin) && + (i32X <= psWidget->sPosition.i16XMax) && + (i32Y >= psWidget->sPosition.i16YMin) && + (i32Y <= psWidget->sPosition.i16YMax)) + { + // + // See if the pointer was just raised. + // + if(ui32Msg == WIDGET_MSG_PTR_UP) + { + // + // Toggle the selected state of this check box. + // + pCheck->ui16Style ^= CB_STYLE_SELECTED; + + // + // Redraw the check box based on the new selected state. + // + CheckBoxPaint(psWidget, 1); + + // + // If there is an OnChange callback for this widget then call the + // callback. + // + if(pCheck->pfnOnChange) + { + pCheck->pfnOnChange(psWidget, + pCheck->ui16Style & CB_STYLE_SELECTED); + } + } + + // + // These coordinates are within the extents of the check box widget. + // + return(1); + } + + // + // These coordinates are not within the extents of the check box widget. + // + return(0); +} + +//***************************************************************************** +// +//! Handles messages for a check box widget. +//! +//! \param psWidget is a pointer to the check box widget. +//! \param ui32Msg is the message. +//! \param ui32Param1 is the first parameter to the message. +//! \param ui32Param2 is the second parameter to the message. +//! +//! This function receives messages intended for this check box widget and +//! processes them accordingly. The processing of the message varies based on +//! the message in question. +//! +//! Unrecognized messages are handled by calling WidgetDefaultMsgProc(). +//! +//! \return Returns a value appropriate to the supplied message. +// +//***************************************************************************** +int32_t +CheckBoxMsgProc(tWidget *psWidget, uint32_t ui32Msg, uint32_t ui32Param1, + uint32_t ui32Param2) +{ + // + // Check the arguments. + // + ASSERT(psWidget); + + // + // Determine which message is being sent. + // + switch(ui32Msg) + { + // + // The widget paint request has been sent. + // + case WIDGET_MSG_PAINT: + { + // + // Handle the widget paint request. + // + CheckBoxPaint(psWidget, 0); + + // + // Return one to indicate that the message was successfully + // processed. + // + return(1); + } + + // + // One of the pointer requests has been sent. + // + case WIDGET_MSG_PTR_DOWN: + case WIDGET_MSG_PTR_MOVE: + case WIDGET_MSG_PTR_UP: + { + // + // Handle the pointer request, returning the appropriate value. + // + return(CheckBoxClick(psWidget, ui32Msg, ui32Param1, ui32Param2)); + } + + // + // An unknown request has been sent. + // + default: + { + // + // Let the default message handler process this message. + // + return(WidgetDefaultMsgProc(psWidget, ui32Msg, ui32Param1, + ui32Param2)); + } + } +} + +//***************************************************************************** +// +//! Initializes a check box widget. +//! +//! \param psWidget is a pointer to the check box widget to initialize. +//! \param psDisplay is a pointer to the display on which to draw the check box. +//! \param i32X is the X coordinate of the upper left corner of the check box. +//! \param i32Y is the Y coordinate of the upper left corner of the check box. +//! \param i32Width is the width of the check box. +//! \param i32Height is the height of the check box. +//! +//! This function initializes the provided check box widget. +//! +//! \return None. +// +//***************************************************************************** +void +CheckBoxInit(tCheckBoxWidget *psWidget, const tDisplay *psDisplay, int32_t i32X, + int32_t i32Y, int32_t i32Width, int32_t i32Height) +{ + uint32_t ui32Idx; + + // + // Check the arguments. + // + ASSERT(psWidget); + ASSERT(psDisplay); + + // + // Clear out the widget structure. + // + for(ui32Idx = 0; ui32Idx < sizeof(tCheckBoxWidget); ui32Idx += 4) + { + ((uint32_t *)psWidget)[ui32Idx / 4] = 0; + } + + // + // Set the size of the check box widget structure. + // + psWidget->sBase.i32Size = sizeof(tCheckBoxWidget); + + // + // Mark this widget as fully disconnected. + // + psWidget->sBase.psParent = 0; + psWidget->sBase.psNext = 0; + psWidget->sBase.psChild = 0; + + // + // Save the display pointer. + // + psWidget->sBase.psDisplay = psDisplay; + + // + // Set the extents of this check box. + // + psWidget->sBase.sPosition.i16XMin = i32X; + psWidget->sBase.sPosition.i16YMin = i32Y; + psWidget->sBase.sPosition.i16XMax = i32X + i32Width - 1; + psWidget->sBase.sPosition.i16YMax = i32Y + i32Height - 1; + + // + // Use the check box message handler to processage messages to this check + // box. + // + psWidget->sBase.pfnMsgProc = CheckBoxMsgProc; +} + +//***************************************************************************** +// +// Close the Doxygen group. +//! @} +// +//***************************************************************************** -- cgit v1.3.1