First commit

1 files changed, 611 insertions, 0 deletions

diff --git a/ldmicro/draw_outputdev.cpp b/ldmicro/draw_outputdev.cpp
new file mode 100644
index 0000000..920978c
--- /dev/null
+++ b/ldmicro/draw_outputdev.cpp
@@ -0,0 +1,611 @@
+//-----------------------------------------------------------------------------
+// Copyright 2007 Jonathan Westhues
+//
+// This file is part of LDmicro.
+// 
+// LDmicro is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// LDmicro is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with LDmicro.  If not, see <http://www.gnu.org/licenses/>.
+//------
+//
+// The two `output devices' for the drawing code: either the export as text
+// stuff to write to a file, or all the routines concerned with drawing to
+// the screen.
+// Jonathan Westhues, Dec 2004
+// 
+// Ported to linus by: R Ramana, 2018
+//-----------------------------------------------------------------------------
+
+#include "linuxUI.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "ldmicro.h"
+
+BOOL InSimulationMode; //Temporary
+
+void (*DrawChars)(HCRDC Hcr, int, int, const char *);
+
+// After an undo all the memory addresses change but make an effort to put
+// the cursor roughly where it should be.
+int SelectedGxAfterNextPaint = -1;
+int SelectedGyAfterNextPaint = -1;
+
+// After pushing a rung up or down the position of that rung in the table
+// changes, but the cursor should stay where it was.
+BOOL ScrollSelectedIntoViewAfterNextPaint;
+
+// Buffer that we write to when exporting (drawing) diagram to a text file. 
+// Dynamically allocated so that we're at least slightly efficient.
+static char **ExportBuffer;
+
+// The fonts that we will use to draw the ladder diagram: fixed width, one
+// normal-weight, one bold.
+HFONT       FixedWidthFont;
+HFONT       FixedWidthFontBold;
+
+// Different colour brushes for right and left buses in simulation, but same
+// colour for both in edit mode; also for the backgrounds in simulation and
+// edit modes.
+static HBRUSH   BusRightBus;
+static HBRUSH   BusLeftBrush;
+static HBRUSH   BusBrush;
+static HBRUSH   BgBrush;
+static HBRUSH   SimBgBrush;
+
+// Parameters that determine our offset if we are scrolled
+int ScrollXOffset;
+int ScrollYOffset;
+int ScrollXOffsetMax;
+int ScrollYOffsetMax;
+
+// Is the cursor currently drawn? We XOR it so this gets toggled.
+static BOOL CursorDrawn;
+
+// Colours with which to do syntax highlighting, configurable
+SyntaxHighlightingColours HighlightColours;
+
+#define X_RIGHT_PADDING 30
+/*
+//-----------------------------------------------------------------------------
+// Blink the cursor on the schematic; called by a Windows timer. We XOR
+// draw it so just draw the same rectangle every time to show/erase the
+// cursor. Cursor may be in one of four places in the selected leaf (top,
+// bottom, left, right) but we don't care; just go from the coordinates
+// computed when we drew the schematic in the paint procedure.
+//-----------------------------------------------------------------------------
+BOOL BlinkCursor(BOOL kill = FALSE)
+{
+    // if(GetFocus(MainWindow) != !CursorDrawn) return TRUE;
+    
+    if(Cursor.left == 0) return TRUE;
+
+    PlcCursor c;
+    memcpy(&c, &Cursor, sizeof(c));
+
+    c.top -= ScrollYOffset*POS_HEIGHT*FONT_HEIGHT;
+    c.left -= ScrollXOffset;
+
+    if(c.top >= IoListTop) return TRUE;
+
+    if(c.top + c.height >= IoListTop) {
+        c.height = IoListTop - c.top - 3;
+    }
+
+    // if(!GDK_IS_DRAWING_CONTEXT(Hdc))
+        // return FALSE;
+
+    HCRDC Hcr = gdk_cairo_create(gtk_widget_get_window(DrawWindow));
+
+    static int PREV_x = c.left;
+    static int PREV_y = c.top;
+    static int PREV_w = c.width;
+    static int PREV_h = c.height;
+
+    if (PREV_x != c.left || PREV_y != c.top || PREV_w != c.width || PREV_h != c.height)
+    {
+        PatBlt(Hcr, PREV_x, PREV_y, PREV_w, PREV_h, PATINVERT, (HBRUSH)GetStockObject(BLACK_BRUSH));
+        PREV_x = c.left;
+        PREV_y = c.top;
+        PREV_w = c.width;
+        PREV_h = c.height;
+
+        // MainWindowResized();
+        // PaintWindow(Hcr);
+        gtk_widget_queue_draw(DrawWindow);
+    }
+
+    if (CursorDrawn)
+        PatBlt(Hcr, c.left, c.top, c.width, c.height, PATINVERT, (HBRUSH)GetStockObject(WHITE_BRUSH));
+    else
+        PatBlt(Hcr, c.left, c.top, c.width, c.height, PATINVERT, (HBRUSH)GetStockObject(BLACK_BRUSH));
+    InvalidateRect(DrawWindow, NULL, FALSE);
+    cairo_destroy(Hcr);
+    CursorDrawn = !CursorDrawn;
+
+    return !kill;
+}
+
+//-----------------------------------------------------------------------------
+// Output a string to the screen at a particular location, in character-
+// sized units.
+//-----------------------------------------------------------------------------
+static void DrawCharsToScreen(HCRDC Hcr, int cx, int cy, const char *str)
+{
+    cy -= ScrollYOffset*POS_HEIGHT;
+    if(cy < -2) return;
+    if(cy*FONT_HEIGHT + Y_PADDING > IoListTop) return;
+
+    COLORREF prev;
+    BOOL firstTime = TRUE;
+    BOOL inNumber = FALSE;
+    BOOL inComment = FALSE;
+    int inBrace = 0;
+    for(; *str; str++, cx++) {
+        int x = cx*FONT_WIDTH + X_PADDING;
+        int y = cy*FONT_HEIGHT + Y_PADDING;
+
+        BOOL hiOk = !(InSimulationMode || ThisHighlighted);
+
+        if(strchr("{}[]", *str) && hiOk && !inComment)  {
+            if(*str == '{' || *str == '[') inBrace++;
+            if(inBrace == 1) {
+                prev = GetTextColor(Hcr);
+                SetTextColor(Hcr, HighlightColours.punct);
+                TextOut(DrawWindow, Hcr, x, y, str, 1);
+                SetTextColor(Hcr, prev);
+            } else {
+                TextOut(DrawWindow, Hcr, x, y, str, 1);
+            }
+            if(*str == ']' || *str == '}') inBrace--;
+        } else if((
+            (isdigit(*str) && (firstTime || isspace(str[-1]) 
+                || str[-1] == ':' || str[-1] == '[')) ||
+            (*str == '-' && isdigit(str[1]))) && hiOk && !inComment)
+        {
+            prev = GetTextColor(Hcr);
+            SetTextColor(Hcr, HighlightColours.lit);
+            TextOut(DrawWindow, Hcr, x, y, str, 1);
+            SetTextColor(Hcr, prev);
+            inNumber = TRUE;
+        } else if(*str == '\x01') {
+            cx--;
+            if(hiOk) {
+                prev = GetTextColor(Hcr);
+                SetTextColor(Hcr, HighlightColours.op);
+            }
+        } else if(*str == '\x02') {
+            cx--;
+            if(hiOk) {
+                SetTextColor(Hcr, prev);
+                inComment = FALSE;
+            }
+        } else if(*str == '\x03') {
+            cx--;
+            if(hiOk) {
+                prev = GetTextColor(Hcr);
+                SetTextColor(Hcr, HighlightColours.comment);
+                inComment = TRUE;
+            }
+        } else if(inNumber) {
+            if(isdigit(*str) || *str == '.') {
+                prev = GetTextColor(Hcr);
+                SetTextColor(Hcr, HighlightColours.lit);
+                TextOut(DrawWindow, Hcr, x, y, str, 1);
+                SetTextColor(Hcr, prev);
+            } else {
+                TextOut(DrawWindow, Hcr, x, y, str, 1);
+                inNumber = FALSE;
+            }
+        } else {
+            TextOut(DrawWindow, Hcr, x, y, str, 1);
+        }
+
+        firstTime = FALSE;
+    }
+}
+*/
+//-----------------------------------------------------------------------------
+// Total number of columns that we can display in the given amount of 
+// window area. Need to leave some slop on the right for the scrollbar, of
+// course.
+//-----------------------------------------------------------------------------
+int ScreenColsAvailable(void)
+{
+    int rw = DrawWindow->width();
+
+    return (rw - (X_PADDING + X_RIGHT_PADDING)) / (POS_WIDTH*FONT_WIDTH);
+}
+/*
+//-----------------------------------------------------------------------------
+// Total number of columns that we can display in the given amount of 
+// window area. Need to leave some slop on the right for the scrollbar, of
+// course, and extra slop at the bottom for the horiz scrollbar if it is
+// shown.
+//-----------------------------------------------------------------------------
+int ScreenRowsAvailable(void)
+{
+    int adj;
+    if(ScrollXOffsetMax == 0) {
+        adj = 0;
+    } else {
+        adj = 18;
+    }
+    return (IoListTop - Y_PADDING - adj) / (POS_HEIGHT*FONT_HEIGHT);
+}
+*/
+//-----------------------------------------------------------------------------
+// Paint the ladder logic program to the screen. Also figure out where the
+// cursor should go and fill in coordinates for BlinkCursor. Not allowed to
+// draw deeper than IoListTop, as we would run in to the I/O listbox.
+//-----------------------------------------------------------------------------
+void PaintWindow()
+{
+    ok();
+    // DrawWindow->setStyleSheet("background-color:black;");
+
+    static QPalette pal = QPalette(InSimulationMode ?
+        SimBgBrush->rgb() : BgBrush->rgb());
+    DrawWindow->setPalette(pal);
+
+    /// now figure out how we should draw the ladder logic
+    ColsAvailable = ProgCountWidestRow();
+    if(ColsAvailable < ScreenColsAvailable()) {
+        ColsAvailable = ScreenColsAvailable();
+    }
+   
+    /*int bw =  gtk_widget_get_allocated_width (DrawWindow);// = r.right;
+    int bh = IoListTop;
+    
+    /// now figure out how we should draw the ladder logic
+    ColsAvailable = ProgCountWidestRow();
+    if(ColsAvailable < ScreenColsAvailable()) {
+        ColsAvailable = ScreenColsAvailable();
+    }
+    memset(DisplayMatrix, 0, sizeof(DisplayMatrix));
+    SelectionActive = FALSE;
+    memset(&Cursor, 0, sizeof(Cursor));
+
+    DrawChars = DrawCharsToScreen;
+
+    int i;
+    int cy = 0;
+    int rowsAvailable = ScreenRowsAvailable();
+    for(i = 0; i < Prog.numRungs; i++) {
+        int thisHeight = POS_HEIGHT*CountHeightOfElement(ELEM_SERIES_SUBCKT,
+            Prog.rungs[i]);
+
+        // For speed, there is no need to draw everything all the time, but
+        // we still must draw a bit above and below so that the DisplayMatrix
+        // is filled in enough to make it possible to reselect using the
+        // cursor keys.
+        if(((cy + thisHeight) >= (ScrollYOffset - 8)*POS_HEIGHT) &&
+            (cy < (ScrollYOffset + rowsAvailable + 8)*POS_HEIGHT))
+        {
+            SetBkColor(DrawWindow, Hcr, InSimulationMode ? HighlightColours.simBg :
+                HighlightColours.bg);
+            SetTextColor(Hcr, InSimulationMode ? HighlightColours.simRungNum :
+                HighlightColours.rungNum);
+            SelectObject(Hcr, FixedWidthFont);
+            int rung = i + 1;
+            int y = Y_PADDING + FONT_HEIGHT*cy;
+            int yp = y + FONT_HEIGHT*(POS_HEIGHT/2) - 
+                POS_HEIGHT*FONT_HEIGHT*ScrollYOffset;
+            
+            if(rung < 10) {
+                char r[1] = { rung + '0' };
+                TextOut(DrawWindow, Hcr, 8 + FONT_WIDTH, yp, r, 1);
+            } else {
+                char r[2] = { (rung / 10) + '0', (rung % 10) + '0' };
+                TextOut(DrawWindow, Hcr, 8, yp, r, 2);
+            }
+
+            int cx = 0;
+            DrawElement(Hcr, ELEM_SERIES_SUBCKT, Prog.rungs[i], &cx, &cy, 
+                Prog.rungPowered[i]); 
+        }
+
+        cy += thisHeight;
+        cy += POS_HEIGHT;
+    }
+    cy -= 2;
+    DrawEndRung(Hcr, 0, cy);
+    
+    if(SelectedGxAfterNextPaint >= 0) {
+        MoveCursorNear(SelectedGxAfterNextPaint, SelectedGyAfterNextPaint);
+        InvalidateRect(DrawWindow, NULL, FALSE);
+        SelectedGxAfterNextPaint = -1;
+        SelectedGyAfterNextPaint = -1;
+    } else if(ScrollSelectedIntoViewAfterNextPaint && Selected) {
+        SelectElement(-1, -1, Selected->selectedState);
+        ScrollSelectedIntoViewAfterNextPaint = FALSE;
+        InvalidateRect(DrawWindow, NULL, FALSE);
+    } else {
+        if(!SelectionActive) {
+            if(Prog.numRungs > 0) {
+                if(MoveCursorTopLeft()) {
+                    InvalidateRect(DrawWindow, NULL, FALSE);
+                }
+            }
+        }
+    }
+
+    /// draw the `buses' at either side of the screen
+    RECT r;
+    r.left = X_PADDING - FONT_WIDTH;
+    r.top = 0;
+    r.right = r.left + 4;
+    r.bottom = IoListTop;
+    FillRect(Hcr, &r, InSimulationMode ? BusLeftBrush : BusBrush);
+    r.left += POS_WIDTH*FONT_WIDTH*ColsAvailable + 2;
+    r.right += POS_WIDTH*FONT_WIDTH*ColsAvailable + 2;
+    FillRect(Hcr, &r, InSimulationMode ? BusRightBus : BusBrush);
+    InvalidateRect(DrawWindow, NULL, FALSE);
+ 
+    CursorDrawn = FALSE;
+
+    // BitBlt(paintDc, 0, 0, bw, bh, BackDc, ScrollXOffset, 0, SRCCOPY);
+
+    if(InSimulationMode) {
+        KillTimer(DrawWindow, TIMER_BLINK_CURSOR);
+    } else {
+        SetTimer(DrawWindow, TIMER_BLINK_CURSOR, 200, BlinkCursor);
+    }
+
+    ok();*/
+}
+
+//-----------------------------------------------------------------------------
+// Set up the syntax highlighting colours, according to the currently selected
+// scheme.
+//-----------------------------------------------------------------------------
+static void SetSyntaxHighlightingColours(void)
+{
+    static const SyntaxHighlightingColours Schemes[] = {
+        {
+            RGB(0, 0, 0),           // bg
+            RGB(255, 255, 225),     // def
+            RGB(255, 110, 90),      // selected
+            RGB(255, 150, 90),      // op
+            RGB(255, 255, 100),     // punct
+            RGB(255, 160, 160),     // lit
+            RGB(120, 255, 130),     // name
+            RGB(130, 130, 130),     // rungNum
+            RGB(130, 130, 245),     // comment
+
+            RGB(255, 255, 255),     // bus
+
+            RGB(0, 0, 0),           // simBg
+            RGB(130, 130, 130),     // simRungNum
+            RGB(100, 130, 130),     // simOff
+            RGB(255, 150, 150),     // simOn
+
+            RGB(255, 150, 150),     // simBusLeft
+            RGB(150, 150, 255),     // simBusRight
+        },
+    };
+
+    memcpy(&HighlightColours, &Schemes[0], sizeof(Schemes[0]));
+}
+
+//-----------------------------------------------------------------------------
+// Set up the stuff we'll need to draw our schematic diagram. Fonts, brushes,
+// pens, etc.
+//-----------------------------------------------------------------------------
+void InitForDrawing(void)
+{
+    SetSyntaxHighlightingColours();
+
+    FixedWidthFont = CreateFont(
+        FONT_HEIGHT, FONT_WIDTH,
+        0,
+        FW_REGULAR,
+        FALSE,
+        "Lucida Console");
+
+    FixedWidthFontBold = CreateFont(
+        FONT_HEIGHT, FONT_WIDTH,
+        0,
+        FW_BOLD, // the bold text renders funny under Vista
+        FALSE,
+        "Lucida Console");
+
+    LOGBRUSH lb;
+    lb.lbStyle = BS_SOLID;
+    lb.lbColor = HighlightColours.simBusRight;
+    BusRightBus = CreateBrushIndirect(&lb);
+
+    lb.lbColor = HighlightColours.simBusLeft;
+    BusLeftBrush = CreateBrushIndirect(&lb);
+    
+    lb.lbColor = HighlightColours.bus;
+    BusBrush = CreateBrushIndirect(&lb);
+
+    lb.lbColor = HighlightColours.bg;
+    BgBrush = CreateBrushIndirect(&lb);
+
+    lb.lbColor = HighlightColours.simBg;
+    SimBgBrush = CreateBrushIndirect(&lb);
+}
+
+//-----------------------------------------------------------------------------
+// DrawChars function, for drawing to the export buffer instead of to the
+// screen.
+//-----------------------------------------------------------------------------
+/*static void DrawCharsToExportBuffer(HCRDC Hcr, int cx, int cy, const char *str)
+{
+    while(*str) {
+        if(*str >= 10) {
+            ExportBuffer[cy][cx] = *str;
+            cx++;
+        }
+        str++;
+    }
+}
+
+//-----------------------------------------------------------------------------
+// Export a text drawing of the ladder logic program to a file.
+//-----------------------------------------------------------------------------
+void ExportDrawingAsText(char *file)
+{
+    int maxWidth = ProgCountWidestRow();
+    ColsAvailable = maxWidth;
+
+    int totalHeight = 0;
+    int i;
+    for(i = 0; i < Prog.numRungs; i++) {
+        totalHeight += CountHeightOfElement(ELEM_SERIES_SUBCKT, Prog.rungs[i]);
+        totalHeight += 1;
+    }
+    totalHeight *= POS_HEIGHT;
+    totalHeight += 3;
+
+    ExportBuffer = (char **)CheckMalloc(totalHeight * sizeof(char *));
+   
+    int l = maxWidth*POS_WIDTH + 8;
+    for(i = 0; i < totalHeight; i++) {
+        ExportBuffer[i] = (char *)CheckMalloc(l);
+        memset(ExportBuffer[i], ' ', l-1);
+        ExportBuffer[i][4] = '|';
+        ExportBuffer[i][3] = '|';
+        ExportBuffer[i][l-3] = '|';
+        ExportBuffer[i][l-2] = '|';
+        ExportBuffer[i][l-1] = '\0';
+    }
+
+    DrawChars = DrawCharsToExportBuffer;
+
+    int cy = 1;
+
+    for(i = 0; i < Prog.numRungs; i++) {
+        int cx = 5;
+        DrawElement(NULL, ELEM_SERIES_SUBCKT, Prog.rungs[i], &cx, &cy, 
+            Prog.rungPowered[i]);
+
+        if((i + 1) < 10) {
+            ExportBuffer[cy+1][1] = '0' + (i + 1);
+        } else {
+            ExportBuffer[cy+1][1] = '0' + ((i + 1) % 10);
+            ExportBuffer[cy+1][0] = '0' + ((i + 1) / 10);
+        }
+
+        cy += POS_HEIGHT*CountHeightOfElement(ELEM_SERIES_SUBCKT,
+            Prog.rungs[i]);
+        cy += POS_HEIGHT;
+    }
+    cy -= 2;
+    DrawEndRung(NULL, 5, cy);
+
+    FILE *f = fopen(file, "w");
+    if(!f) {
+        Error(_("Couldn't open '%s'\n"), f);
+        return;
+    }
+
+    fprintf(f, "LDmicro export text\n");
+
+    if(Prog.mcu) {
+        fprintf(f, "for '%s', %.6f MHz crystal, %.1f ms cycle time\n\n",
+            Prog.mcu->mcuName, Prog.mcuClock/1e6, Prog.cycleTime/1e3);
+    } else {
+        fprintf(f, "no MCU assigned, %.6f MHz crystal, %.1f ms cycle time\n\n",
+            Prog.mcuClock/1e6, Prog.cycleTime/1e3);
+    }
+
+    fprintf(f, "\nLADDER DIAGRAM:\n\n");
+
+    for(i = 0; i < totalHeight; i++) {
+        ExportBuffer[i][4] = '|';
+        fprintf(f, "%s\n", ExportBuffer[i]);
+        CheckFree(ExportBuffer[i]);
+    }
+    CheckFree(ExportBuffer);
+    ExportBuffer = NULL;
+
+    fprintf(f, _("\n\nI/O ASSIGNMENT:\n\n"));
+    
+    fprintf(f, _("  Name                       | Type               | Pin\n"));
+    fprintf(f,   " ----------------------------+--------------------+------\n");
+    for(i = 0; i < Prog.io.count; i++) {
+        char b[1024];
+        memset(b, '\0', sizeof(b));
+
+        PlcProgramSingleIo *io = &Prog.io.assignment[i];
+        char *type = IoTypeToString(io->type);
+        char pin[MAX_NAME_LEN];
+
+        PinNumberForIo(pin, io);
+
+        sprintf(b, "                             |                    | %s\n",
+            pin);
+
+        memcpy(b+2, io->name, strlen(io->name));
+        memcpy(b+31, type, strlen(type));
+        fprintf(f, "%s", b);
+    }
+
+    fclose(f);
+
+    // we may have trashed the grid tables a bit; a repaint will fix that
+    InvalidateRect(MainWindow, NULL, FALSE);
+}
+
+//-----------------------------------------------------------------------------
+// Determine the settings of the vertical and (if needed) horizontal
+// scrollbars used to scroll our view of the program.
+//-----------------------------------------------------------------------------
+void SetUpScrollbars(BOOL *horizShown, SCROLLINFO *horiz, SCROLLINFO *vert)
+{
+    int totalHeight = 0;
+    int i;
+    for(i = 0; i < Prog.numRungs; i++) {
+        totalHeight += CountHeightOfElement(ELEM_SERIES_SUBCKT, Prog.rungs[i]);
+        totalHeight++;
+    }
+    totalHeight += 1; // for the end rung
+
+    int totalWidth = ProgCountWidestRow();
+
+    if(totalWidth <= ScreenColsAvailable()) {
+        *horizShown = FALSE;
+        ScrollXOffset = 0;
+        ScrollXOffsetMax = 0;
+    } else {
+        *horizShown = TRUE;
+        memset(horiz, 0, sizeof(*horiz));
+        horiz->cbSize = sizeof(*horiz);
+        // horiz->fMask = SIF_DISABLENOSCROLL | SIF_ALL;
+        horiz->nMin = 0;
+        horiz->nMax = X_PADDING + totalWidth*POS_WIDTH*FONT_WIDTH;
+        RECT r;
+        GetClientRect(DrawWindow, &r);
+        horiz->nPage = r.right - X_PADDING;
+        horiz->nPos = ScrollXOffset;
+
+        ScrollXOffsetMax = horiz->nMax - horiz->nPage + 1;
+        if(ScrollXOffset > ScrollXOffsetMax) ScrollXOffset = ScrollXOffsetMax;
+        if(ScrollXOffset < 0) ScrollXOffset = 0;
+    }
+
+    vert->cbSize = sizeof(*vert);
+    // vert->fMask = SIF_DISABLENOSCROLL | SIF_ALL;
+    vert->nMin = 0;
+    vert->nMax = totalHeight - 1;
+    vert->nPos = ScrollYOffset;
+    vert->nPage = ScreenRowsAvailable();
+
+    ScrollYOffsetMax = vert->nMax - vert->nPage + 1;
+
+    if(ScrollYOffset > ScrollYOffsetMax) ScrollYOffset = ScrollYOffsetMax;
+    if(ScrollYOffset < 0) ScrollYOffset = 0;
+}
+*/
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